{"id":5067,"date":"2024-01-03T00:05:39","date_gmt":"2024-01-02T16:05:39","guid":{"rendered":"https:\/\/blog.coderfan.org\/?p=5067"},"modified":"2024-01-03T14:27:00","modified_gmt":"2024-01-03T06:27:00","slug":"c-c-cross-platform-printf-variables","status":"publish","type":"post","link":"https:\/\/blog.coderfan.org\/en\/c-c-cross-platform-printf-variables.html","title":{"rendered":"C\/C++\u8de8\u5e73\u53f0\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u6253\u5370"},"content":{"rendered":"
\n
\n \t<\/i> Read Time:<\/span>1 Minute, 19 Second <\/div>\n\n <\/div>\n

\u5728\u6211\u4eec\u65e5\u5e38\u5f00\u53d1\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u6d89\u53ca\u5230\u4e00\u4e9bDebug\u65e5\u5fd7\u7684\u6253\u5370\uff0c\u6b64\u65f6\u53ef\u80fd\u9700\u8981\u6253\u5370\u5404\u79cd\u6570\u636e\u7c7b\u578b\u7684\u53d8\u91cf\u503c\uff0c\u4ece\u800c\u8fdb\u884c\u8bca\u65ad\u3002<\/p>\n\n\n\n

\u6b64\u65f6\u6211\u4eec\u4e00\u822c\u6709\u4e24\u79cd\u9009\u62e9\uff0c\u4e00\u79cd\u662f\u4f7f\u7528stdout\u6d41\u8f93\u51fa\u7684\u65b9\u5f0f\u8fdb\u884c\u6253\u5370\uff1b\u53e6\u5916\u4e00\u79cd\u5219\u662f\u4f7f\u7528printf\u7ed3\u5408\u5360\u4f4d\u7b26\u7684\u5f62\u5f0f\u8fdb\u884c\u6253\u5370\u3002\u8fd9\u91cc\u7b80\u5355\u4e3e\u4f8b\u5982\u4e0b\uff1a<\/p>\n\n\n\n

int a = 1;\nint64_t b = 2;\n\n\/\/\u5360\u4f4d\u7b26\u6253\u5370\nprintf(\"%lld,%d\\n\", a, b);\n\/\/\u6d41\u8f93\u51fa\u6253\u5370\nstd::cout << a <<\",\"<< b <<std::endl;<\/code><\/pre>\n\n\n\n
\u5176\u4e2dstdout\u6d41\u5931\u8f93\u51fa\u7684\u65b9\u5f0f\u5199\u8d77\u6765\u4e0d\u591f\u7b80\u6d01\uff0c\u4e2a\u4eba\u4e0d\u559c\u6b22\u4f7f\u7528\uff1b\u76f8\u53cd\u66f4\u559c\u6b22\u4f7f\u7528printf\u7ed3\u5408\u5360\u4f4d\u7b26\u7684\u65b9\u5f0f\u6765\u8fdb\u884c\u6253\u5370\u3002<\/p>\n\n\n\n
\u5e38\u89c4\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4f7f\u7528C\/C++\u6253\u5370\u53d8\u91cf\u65f6\u90fd\u4f1a\u4f7f\u7528\u5360\u4f4d\u7b26\uff0c\u800c\u4e0d\u540c\u7684\u6570\u636e\u7c7b\u578b\u9700\u8981\u642d\u914d\u4e0d\u540c\u7684\u5360\u4f4d\u7b26\u624d\u80fd\u6b63\u5e38\u8fdb\u884c\u6253\u5370\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u6570\u636e\u7c7b\u578b\u5bf9\u5e94\u7684\u5360\u4f4d\u7b26\u6e05\u5355\uff1a<\/p>\n\n\n\n
\u6570\u636e\u7c7b\u578b<\/td>\u5360\u4f4d\u7b26<\/td>\u5907\u6ce8<\/td><\/tr>
char<\/td>%c<\/td>\u7528\u4e8e\u6253\u5370\u5b57\u7b26<\/td><\/tr>
char*,char[]<\/td>%s<\/td>\u7528\u4e8e\u6253\u5370\u4ee5\\0\u7ed3\u5c3e\u7684\u5b57\u7b26\u4e32<\/td><\/tr>
int<\/td>%d<\/td>\u5341\u8fdb\u5236\u6709\u7b26\u53f7\u6574\u6570<\/td><\/tr>
long<\/td>%ld<\/td> \u5341\u8fdb\u5236\u6709\u7b26\u53f7\u957f\u6574\u578b<\/td><\/tr>
long long<\/td>%lld<\/td> <\/td><\/tr>
unsigned int<\/td>%u<\/td>\u5341\u8fdb\u5236\u65e0\u7b26\u53f7\u6574\u6570<\/td><\/tr>
unsigned int<\/td>%o<\/td>\u516b\u8fdb\u5236\u65e0\u7b26\u53f7\u6574\u6570<\/td><\/tr>
unsigned int<\/td>%x<\/td>\u5341\u516d\u8fdb\u5236\u65e0\u7b26\u53f7\u6574\u6570\uff0c\u5c0f\u5199<\/td><\/tr>
unsigned int<\/td>%X<\/td>\u5341\u516d\u8fdb\u5236\u65e0\u7b26\u53f7\u6574\u6570\uff0c\u5927\u5199<\/td><\/tr>
unsigned long<\/td>%lu<\/td> \u5341\u8fdb\u5236\u65e0\u7b26\u53f7\u957f\u6574\u578b<\/td><\/tr>
unsigned long long<\/td>%llu<\/td> <\/td><\/tr>
float<\/td>%f<\/td>\u6d6e\u70b9\u6570<\/td><\/tr>
double<\/td>%lf<\/td>\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u6570<\/td><\/tr>
pointer<\/td>%p<\/td>\u4efb\u4f55\u6307\u9488\u7c7b\u578b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u4f46\u5728\u67d0\u4e9b\u65f6\u5019\uff0c\u6211\u4eec\u4f7f\u7528\u5360\u4f4d\u7b26\u6253\u5370\u53ef\u80fd\u4f1a\u5b58\u5728\u95ee\u9898\uff0c\u6bd4\u5982\u6b64\u79cd\u573a\u666f\uff1a<\/p>\n\n\n\n
uint64_t product_seq=45845454;\nprintf(\u201cproduct sequence is %lu\u201d, product_seq);<\/code><\/pre>\n\n\n\n
\u5982\u679c\u6211\u4eec\u572864\u4f4d\u5e73\u53f0\u4e0a\u8fdb\u884c\u7f16\u8bd1\u8fd0\u884c\uff0c\u4e0d\u4f1a\u6709\u4efb\u4f55\u95ee\u9898\uff1b\u4f46\u5982\u679c\u6211\u4eec\u572832\u4f4d\u5e73\u53f0\u4e0a\u8fd0\u884c\uff0c\u5219\u4f1a\u63d0\u793a\u62a5\u9519\uff0c\u62a5\u9519\u7684\u4fe1\u606f\u63d0\u793a\u6b64\u5904\u5e94\u5f53\u4f7f\u7528\u7684\u5360\u4f4d\u7b26\u4e3a%llu\u800c\u975e%lu\u3002<\/p>\n\n\n\n
\u8fd9\u662f\u56e0\u4e3auint64_t \u572864\u4f4d\u5e73\u53f0\u4e0a\u5bf9\u5e94\u7684\u6570\u636e\u7c7b\u578b\u662funsigned long\uff0c\u572832\u4f4d\u5e73\u53f0\u4e0a\u5219\u662funsigned long long\uff0c\u5982\u679c\u6211\u4eec\u518d\u4f7f\u7528%lu\u5c31\u4f1a\u62a5\u9519\u3002<\/p>\n\n\n\n
\u5982\u4f55\u89e3\u51b3\u4e00\u5b9a\u4f4d\u957f\u7684\u6570\u636e\u5728\u4e0d\u540c\u5e73\u53f0\u4e0a\u7684\u6570\u636e\u7c7b\u578b\u4e0d\u4e00\u81f4\u800c\u5bfc\u81f4\u5360\u4f4d\u7b26\u6253\u5370\u5931\u8d25\u5462\uff0c\u5176\u5b9eC\/C++\u8bed\u8a00\u6807\u51c6\u89c4\u8303\u5236\u5b9a\u8005\u5df2\u7ecf\u8003\u8651\u5230\u4e86\u8fd9\u79cd\u95ee\u9898\uff0c\u5e76\u7ed9\u51fa\u4e86\u76f8\u5e94\u7684\u89e3\u51b3\u65b9\u6848\u3002\u6211\u4eec\u5728C\u4e2d\u53ef\u4ee5\u5f15\u7528inttypes.h\uff0c\u800c\u5728C++\u4e2d\u5f15\u7528cinttypes\u5934\u6587\u4ef6\uff0c\u518d\u7ed3\u5408\u5177\u4f53\u7684\u5b8f\u5373\u53ef\u5b9e\u73b0\u4f18\u96c5\u7684\u8de8\u5e73\u53f0\u6253\u5370\u3002\u5982\u4e0b\u793a\u4f8b\uff1a<\/p>\n\n\n\n
#C example\ninclude <inttypes.h>\nuint64_t product_seq=45845454;\nprintf(\u201cproduct sequence is %\u201d PRIu64, product_seq);\n\n#C++ example\ninclude <cinttypes>\nuint64_t product_seq=45845454;\nprintf(\u201cproduct sequence is %\u201d PRIu64, product_seq);<\/code><\/pre>\n\n\n\n
\u6240\u4ee5\u5f53\u6211\u4eec\u9700\u8981\u8de8\u5e73\u53f0\u6253\u5370\u4e0d\u540c\u4f4d\u957f\u7684\u6570\u636e\u7c7b\u578b\u65f6\uff0c\u6211\u4eec\u6700\u597d\u6452\u5f03\u76f4\u63a5\u4f7f\u7528\u5360\u4f4d\u7b26\u8fdb\u884c\u6253\u5370\u7684\u65b9\u5f0f\uff0c\u8f6c\u800c\u5229\u7528\u5b98\u65b9\u6807\u51c6\u5b9a\u4e49\u4e2d\u7684\u5b8f\u6765\u5e2e\u52a9\u6211\u4eec\u8fdb\u884c\u6253\u5370\uff0c\u8fd9\u91cc\u662f\u4e00\u4e9b\u5bf9\u5e94\u8868\uff1a<\/p>\n\n\n\n
\u6570\u636e\u7c7b\u578b<\/td>\u5341\u8fdb\u5236<\/td>\u5341\u516d\u8fdb\u5236<\/td>\u5907\u6ce8<\/td><\/tr>
int8_t<\/td>PRId8\/ PRIi8<\/td> <\/td> <\/td><\/tr>
int16_t<\/td>PRId16\/PRIi16<\/td> <\/td> <\/td><\/tr>
int32_t<\/td>PRId32\/PRIi32<\/td> <\/td> <\/td><\/tr>
int64_t<\/td>PRId64\/PRIi64<\/td> <\/td> <\/td><\/tr>
uint8_t<\/td>PRIu8<\/strong><\/td>PRIx8<\/td>\u5982\u9700\u8981\u5927\u5199\u5219\u5c06x\u53d8\u4e3aX<\/td><\/tr>
uint16_t<\/td>PRIu16<\/strong><\/td>PRIx16<\/td>\u5982\u9700\u8981\u5927\u5199\u5219\u5c06x\u53d8\u4e3aX<\/td><\/tr>
uint32_t<\/td>PRIu32<\/strong><\/td>PRIx32<\/td>\u5982\u9700\u8981\u5927\u5199\u5219\u5c06x\u53d8\u4e3aX<\/td><\/tr>
uint64_t<\/td>PRIu64<\/strong><\/td>PRIx64<\/td>\u5982\u9700\u8981\u5927\u5199\u5219\u5c06x\u53d8\u4e3aX<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u518d\u8fdb\u4e00\u6b65\uff0c\u63a2\u7a76\u5176\u5b9e\u73b0\u7684\u539f\u7406\uff0c\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u627e\u5230inttypes.h\u5934\u6587\u4ef6\uff0c\u770b\u770b\u5173\u4e8ePRIu64\u7684\u5b9a\u4e49\uff1a<\/p>\n\n\n\n
#define PRIu8               \"u\"                   \/* uint8_t *\/\n#define PRIu16              \"u\"                   \/* uint16_t *\/\n#define PRIu32              \"u\"                   \/* uint32_t *\/\n#define PRIu64              __PRI_64_prefix\"u\"    \/* uint64_t *\/<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u770b\u5230PRIu64\u4f1a\u88ab\u66ff\u6362\u4e3a__PRI_64_prefix”u”\uff0c\u800c__PRI_64_prefix\u7684\u5b9a\u4e49\u5728\u8be5\u5934\u6587\u4ef6\u4e2d\uff1a<\/p>\n\n\n\n
#ifdef __LP64__\n#define __PRI_64_prefix  \"l\"\n#define __PRI_PTR_prefix \"l\"\n#else\n#define __PRI_64_prefix \"ll\"\n#define __PRI_PTR_prefix\n#endif<\/code><\/pre>\n\n\n\n
\u8fd9\u6bb5\u5b8f\u5b9a\u4e49\u7684\u4f5c\u7528\u5176\u5b9e\u5c31\u662f\u6839\u636e\u5b8f__LP64__\u6765\u8bbe\u7f6e__PRI_64_prefix\uff0c\u5728\u4e0d\u540c\u7684\u5e73\u53f0\u4e2d\u5176\u4f1a\u88ab\u4e0d\u540c\u7684\u503c\u53d6\u4ee3\u3002\u7531\u6b64\uff0c__PRI_64_prefix”u”\u572864\u4f4d\u5e73\u53f0\u4e0a\u5c31\u662flu\uff0c\u572832\u4f4d\u5e73\u53f0\u4e0a\u5c31\u662fllu\uff0c\u5728\u9884\u5904\u7406\u9636\u6bb5\u5c31\u5b8c\u6210\u4e86\u66ff\u6362\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u8de8\u5e73\u53f0\u7684\u7c7b\u578b\u9002\u914d\u3002<\/p>\n        
\n            
\n                \n                
\n                    \n                        \"Happy\"\n                    <\/a>\n                    
\n                        Happy                    <\/div>\n                    
\n                                                    3<\/span>\n                        \n                                                100<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Sad\"\n                    <\/a>\n                    
\n                        Sad                    <\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Excited\"\n                    <\/a>\n                    
\n                        Excited                    <\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Sleepy\"\n                    <\/a>\n                    
\n                        Sleepy                    <\/div>\n                    
\n                                                    0<\/span>\n                        \n                                                0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Angry\"\n                    <\/a>\n                    
Angry<\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                        \n                    <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Surprise\"\n                    <\/a>\n                    
Surprise<\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>","protected":false},"excerpt":{"rendered":"
C\/C++\u4e2d\u8de8\u5e73\u53f0\u6253\u5370\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u6280\u5de7<\/p>","protected":false},"author":1,"featured_media":5076,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[17],"tags":[20,21],"class_list":["post-5067","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programming","tag-c","tag-c-2"],"blocksy_meta":[],"aioseo_notices":[],"featured_image_urls":{"full":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus.png",1024,512,false],"thumbnail":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus-150x150.png",150,150,true],"medium":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus-300x150.png",300,150,true],"medium_large":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus-768x384.png",768,384,true],"large":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus.png",1024,512,false],"1536x1536":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus.png",1024,512,false],"2048x2048":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus.png",1024,512,false],"trp-custom-language-flag":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus-18x9.png",18,9,true]},"post_excerpt_stackable":"
C\/C++\u4e2d\u8de8\u5e73\u53f0\u6253\u5370\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u6280\u5de7<\/p>\n","category_list":"\u7f16\u7a0b\u8bed\u8a00<\/a>","author_info":{"name":"FranzKafka95","url":"https:\/\/blog.coderfan.org\/en\/author\/yushenglonely95"},"comments_num":"0 comments","featured_image_urls_v2":{"full":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus.png",1024,512,false],"thumbnail":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus-150x150.png",150,150,true],"medium":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus-300x150.png",300,150,true],"medium_large":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus-768x384.png",768,384,true],"large":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus.png",1024,512,false],"1536x1536":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus.png",1024,512,false],"2048x2048":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus.png",1024,512,false],"trp-custom-language-flag":["https:\/\/blog.coderfan.org\/wp-content\/uploads\/2024\/01\/cplus-18x9.png",18,9,true]},"post_excerpt_stackable_v2":"
C\/C++\u4e2d\u8de8\u5e73\u53f0\u6253\u5370\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u6280\u5de7<\/p>\n","category_list_v2":"\u7f16\u7a0b\u8bed\u8a00<\/a>","author_info_v2":{"name":"FranzKafka95","url":"https:\/\/blog.coderfan.org\/en\/author\/yushenglonely95"},"comments_num_v2":"0 comments","_links":{"self":[{"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/posts\/5067","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/comments?post=5067"}],"version-history":[{"count":8,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/posts\/5067\/revisions"}],"predecessor-version":[{"id":5078,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/posts\/5067\/revisions\/5078"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/media\/5076"}],"wp:attachment":[{"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/media?parent=5067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/categories?post=5067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.coderfan.org\/en\/wp-json\/wp\/v2\/tags?post=5067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}