{"id":295617,"date":"2024-05-20T15:39:53","date_gmt":"2024-05-20T07:39:53","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/295617.html"},"modified":"2024-05-20T15:40:01","modified_gmt":"2024-05-20T07:40:01","slug":"printf-%e5%a6%82%e4%bd%95%e8%be%93%e5%87%ba%e5%ad%97%e7%ac%a6%e7%9a%84%e5%b8%b8%e9%87%8f","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/295617.html","title":{"rendered":"printf \u5982\u4f55\u8f93\u51fa\u5b57\u7b26\u7684\u5e38\u91cf"},"content":{"rendered":"

\"printf<\/p>\n

printf \u51fd\u6570\u662f C \u8bed\u8a00\u4e2d\u7528\u4e8e\u8f93\u51fa\u7684\u6807\u51c6\u5e93\u51fd\u6570\uff0c\u5b83\u80fd\u591f\u7528\u4e8e\u8f93\u51fa\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\uff0c\u5305\u62ec\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u548c\u5b57\u7b26\u7b49\u3002\u5728\u4f7f\u7528 printf \u8f93\u51fa\u5b57\u7b26\u5e38\u91cf\u65f6\uff0c\u4e3b\u8981\u901a\u8fc7 %c<\/code> \u683c\u5f0f\u8bf4\u660e\u7b26\u3001\u76f4\u63a5\u6307\u5b9a\u5b57\u7b26\u5e38\u91cf\uff0c\u5e76\u53ef\u7ed3\u5408\u8f6c\u4e49\u5b57\u7b26\u8fdb\u884c\u66f4\u590d\u6742\u7684\u8f93\u51fa<\/strong>\u3002\u76f4\u63a5\u6307\u5b9a\u5b57\u7b26\u5e38\u91cf\u662f\u6700\u76f4\u63a5\u7684\u65b9\u5f0f\uff0c\u4f8b\u5982 printf("%c", 'A');<\/code>\uff0c\u5373\u53ef\u8f93\u51fa\u5b57\u7b26 A<\/code>\u3002\u5f53\u7136\uff0c\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u501f\u52a9\u8f6c\u4e49\u5b57\u7b26\u53ef\u4ee5\u5b9e\u73b0\u5982\u6362\u884c\uff08\\n<\/code>\uff09\u3001\u5236\u8868\u7b26\uff08\\t<\/code>\uff09\u7b49\u63a7\u5236\u6548\u679c\uff0c\u4ece\u800c\u4e30\u5bcc\u8f93\u51fa\u5185\u5bb9\u7684\u683c\u5f0f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n

printf \u51fd\u6570\u901a\u8fc7\u683c\u5f0f\u5b57\u7b26\u4e32\u6765\u6307\u5b9a\u540e\u7eed\u53c2\u6570\u7684\u8f93\u51fa\u683c\u5f0f\uff0c\u5bf9\u4e8e\u5b57\u7b26\u5e38\u91cf\u800c\u8a00\uff0c%c \u662f\u4e13\u95e8\u7528\u6765\u8f93\u51fa\u5355\u4e2a\u5b57\u7b26\u7684\u683c\u5f0f\u8bf4\u660e\u7b26\u3002\u5982\u4e0b\u6240\u793a\u662f printf \u51fd\u6570\u8f93\u51fa\u5b57\u7b26\u5e38\u91cf\u7684\u5178\u578b\u7528\u6cd5\uff1a<\/p>\n<\/p>\n

#include <stdio.h><\/p>\n
int mAI<\/a>n() {<\/p>\n
    char ch = 'A';<\/p>\n
    printf("Output a character: %c\\n", ch);<\/p>\n
    return 0;<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cch<\/code> \u88ab\u5b9a\u4e49\u4e3a\u5b57\u7b26\u578b\u53d8\u91cf\uff0c\u5e76\u88ab\u521d\u59cb\u5316\u4e3a\u5b57\u7b26 'A'<\/code>\u3002\u4e4b\u540e\uff0c\u4f7f\u7528 printf<\/code> \u51fd\u6570\uff0c\u5e76\u901a\u8fc7 %c<\/code> \u683c\u5f0f\u8bf4\u660e\u7b26\u8f93\u51fa ch<\/code> \u53d8\u91cf\u7684\u503c\u3002\u5f53\u7a0b\u5e8f\u6267\u884c\u65f6\uff0c\u5b83\u5c06\u663e\u793a"Output a character: A"\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u8f6c\u4e49\u5b57\u7b26\u7684\u4f7f\u7528<\/h3>\n<\/p>\n
\u8f6c\u4e49\u5b57\u7b26\u4f7f\u5f97\u8f93\u51fa\u7684\u5185\u5bb9\u80fd\u591f\u542b\u6709\u65e0\u6cd5\u76f4\u63a5\u901a\u8fc7\u952e\u76d8\u8f93\u5165\u7684\u5b57\u7b26\uff0c\u6216\u8005\u662f\u63a7\u5236\u8f93\u51fa\u683c\u5f0f\u7684\u7279\u6b8a\u5b57\u7b26\u3002\u5b83\u4eec\u901a\u5e38\u4ee5\u53cd\u659c\u6760 <\/code> \u5f00\u5934\uff0c\u540e\u8ddf\u4e00\u4e2a\u6216\u51e0\u4e2a\u5b57\u7b26\u3002\u4f7f\u7528\u8f6c\u4e49\u5b57\u7b26\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u8f93\u51fa\u6587\u672c\u4e2d\u5d4c\u5165\u6362\u884c\u7b26\u3001\u5236\u8868\u7b26\u7b49\u63a7\u5236\u5b57\u7b26\u3002<\/p>\n<\/p>\n
#include <stdio.h><\/p>\n
int main() {<\/p>\n
    printf("New Line Character: \\n");<\/p>\n
    printf("Tab Character: \\t");<\/p>\n
    printf("Quote Character: \\"");<\/p>\n
    printf("Backslash Character: \\\\");<\/p>\n
    return 0;<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\\n<\/code> \u4ee3\u8868\u6362\u884c\u7b26\uff0c\\t<\/code> \u4ee3\u8868\u5236\u8868\u7b26\uff0c\\"<\/code> \u7528\u4e8e\u8f93\u51fa\u53cc\u5f15\u53f7\u5b57\u7b26\uff0c\u800c \\<\/code> \u7528\u4e8e\u8f93\u51fa\u53cd\u659c\u6760\u81ea\u8eab\u3002\u901a\u8fc7\u4f7f\u7528\u8fd9\u4e9b\u8f6c\u4e49\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f7f\u8f93\u51fa\u683c\u5f0f\u66f4\u52a0\u591a\u6837\u548c\u4e30\u5bcc\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u8f93\u51fa\u591a\u4e2a\u5b57\u7b26<\/h3>\n<\/p>\n
\u867d\u7136 %c<\/code> \u4e3b\u8981\u7528\u4e8e\u8f93\u51fa\u5355\u4e2a\u5b57\u7b26\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5728 printf<\/code> \u51fd\u6570\u4e2d\u591a\u6b21\u4f7f\u7528 %c<\/code> \u6765\u5b9e\u73b0\u8fde\u7eed\u8f93\u51fa\u591a\u4e2a\u5b57\u7b26\u3002\u6b64\u5916\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u5b57\u7b26\u4e32\u7684\u5f62\u5f0f\u8f93\u51fa\u4e00\u7cfb\u5217\u5b57\u7b26\u3002<\/p>\n<\/p>\n
#include <stdio.h><\/p>\n
int main() {<\/p>\n
    printf("Characters: %c%c%c\\n", 'H', 'i', '!');<\/p>\n
    printf("String: %s", "Hi!");<\/p>\n
    return 0;<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u7b2c\u4e00\u884c printf<\/code> \u901a\u8fc7\u591a\u6b21\u4f7f\u7528 %c<\/code> \u683c\u5f0f\u8bf4\u660e\u7b26\uff0c\u8fde\u7eed\u8f93\u51fa\u4e86\u4e09\u4e2a\u5b57\u7b26\u3002\u7b2c\u4e8c\u884c\u5219\u662f\u901a\u8fc7 %s<\/code> \u683c\u5f0f\u8bf4\u660e\u7b26\u8f93\u51fa\u5b57\u7b26\u4e32\u3002\u8fd9\u5c55\u793a\u4e86\u5b57\u7b26\u548c\u5b57\u7b26\u4e32\u8f93\u51fa\u4e4b\u95f4\u7684\u5173\u7cfb\u548c\u533a\u522b\u3002<\/p>\n<\/p>\n
\u56db\u3001\u683c\u5f0f\u5316\u8f93\u51fa\u5b57\u7b26<\/h3>\n<\/p>\n
\u901a\u8fc7\u683c\u5f0f\u8bf4\u660e\u7b26\uff0c\u6211\u4eec\u4e0d\u4ec5\u53ef\u4ee5\u63a7\u5236\u8f93\u51fa\u5185\u5bb9\u7684\u7c7b\u578b\uff0c\u8fd8\u53ef\u4ee5\u63a7\u5236\u8f93\u51fa\u683c\u5f0f\uff0c\u4f8b\u5982\u8f93\u51fa\u5bbd\u5ea6\u3001\u5de6\u5bf9\u9f50\u6216\u53f3\u5bf9\u9f50\u7b49\u3002<\/p>\n<\/p>\n
#include <stdio.h><\/p>\n
int main() {<\/p>\n
    printf("Character:[%c]\\n", 'A');<\/p>\n
    printf("Character Right Aligned:[%5c]\\n", 'A');<\/p>\n
    printf("Character Left Aligned:[%-5c]", 'A');<\/p>\n
    return 0;<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u7b2c\u4e8c\u884c\u7684 %5c<\/code> \u6307\u5b9a\u4e86\u8f93\u51fa\u5b57\u7b26\u7684\u6700\u5c0f\u5bbd\u5ea6\u4e3a5\u4e2a\u5b57\u7b26\uff0c\u5b57\u7b26\u9ed8\u8ba4\u53f3\u5bf9\u9f50\u3002\u7b2c\u4e09\u884c\u7684 %-5c<\/code> \u5219\u8868\u660e\u5b57\u7b26\u5de6\u5bf9\u9f50\uff0c\u5bbd\u5ea6\u540c\u6837\u4e3a5\u3002\u8fd9\u79cd\u683c\u5f0f\u5316\u8f93\u51fa\u5728\u9700\u8981\u6574\u9f50\u6392\u7248\u7684\u573a\u5408\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u4ecb\u7ecd\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230 printf \u51fd\u6570\u5728\u8f93\u51fa\u5b57\u7b26\u5e38\u91cf\u65f6\u7684\u7075\u6d3b\u6027\u548c\u5f3a\u5927\u529f\u80fd\u3002\u65e0\u8bba\u662f\u57fa\u672c\u7684\u5b57\u7b26\u8f93\u51fa\u3001\u8f6c\u4e49\u5b57\u7b26\u7684\u5e94\u7528\uff0c\u8fd8\u662f\u590d\u6742\u7684\u683c\u5f0f\u63a7\u5236\uff0cprintf \u90fd\u80fd\u591f\u6ee1\u8db3\u5927\u591a\u6570\u9700\u6c42\uff0c\u4f7f\u5f97\u8f93\u51fa\u5185\u5bb9\u65e2\u51c6\u786e\u53c8\u7f8e\u89c2\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
Q: \u8bf7\u95ee\u5728C\u8bed\u8a00\u4e2d\u5982\u4f55\u4f7f\u7528printf\u51fd\u6570\u6765\u8f93\u51fa\u5b57\u7b26\u7684\u5e38\u91cf\uff1f<\/strong><\/p>\n
A: C\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528printf\u51fd\u6570\u6765\u8f93\u51fa\u5b57\u7b26\u7684\u5e38\u91cf\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
#include <stdio.h>\n\nint main() {\n    char c = 'A';\n\n    printf("\u5b57\u7b26\u5e38\u91cfc\u7684\u503c\u662f\uff1a%c\\n", c);\n\n    return 0;\n}\n<\/code><\/pre>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5b57\u7b26\u53d8\u91cfc\uff0c\u5e76\u5c06\u5176\u8d4b\u503c\u4e3a\u5b57\u7b26\u5e38\u91cf'A'\u3002\u7136\u540e\u4f7f\u7528printf\u51fd\u6570\uff0c\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32"%c"\u6765\u8f93\u51fa\u5b57\u7b26\u5e38\u91cfc\u7684\u503c\u3002<\/p>\n
Q: \u600e\u6837\u4f7f\u7528printf\u51fd\u6570\u6765\u8f93\u51fa\u5b57\u7b26\u4e32\u5e38\u91cf\uff1f<\/strong><\/p>\n
A: \u5728C\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528printf\u51fd\u6570\u6765\u8f93\u51fa\u5b57\u7b26\u4e32\u5e38\u91cf\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
#include <stdio.h>\n\nint main() {\n    char *str = "Hello, world!";\n\n    printf("\u5b57\u7b26\u4e32\u5e38\u91cfstr\u7684\u503c\u662f\uff1a%s\\n", str);\n\n    return 0;\n}\n<\/code><\/pre>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u6307\u9488\u53d8\u91cfstr\uff0c\u5e76\u5c06\u5176\u8d4b\u503c\u4e3a\u5b57\u7b26\u4e32\u5e38\u91cf"Hello, world!"\u3002\u7136\u540e\u4f7f\u7528printf\u51fd\u6570\uff0c\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32"%s"\u6765\u8f93\u51fa\u5b57\u7b26\u4e32\u5e38\u91cfstr\u7684\u503c\u3002<\/p>\n
Q: \u6709\u6ca1\u6709\u5176\u4ed6\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u53ef\u4ee5\u8f93\u51fa\u5b57\u7b26\u7684\u5e38\u91cf\uff1f<\/strong><\/p>\n
A: \u9664\u4e86\u4f7f\u7528"%c"\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6765\u8f93\u51fa\u5b57\u7b26\u7684\u5e38\u91cf\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6765\u8f93\u51fa\u5b57\u7b26\u7684\u5e38\u91cf\u3002\u4f8b\u5982\uff1a<\/p>\n
    \n
  • "%d"\uff1a\u4ee5\u5341\u8fdb\u5236\u5f62\u5f0f\u8f93\u51fa\u5b57\u7b26\u7684ASCII\u7801\u503c\u3002<\/li>\n
  • "%x"\uff1a\u4ee5\u5341\u516d\u8fdb\u5236\u5f62\u5f0f\u8f93\u51fa\u5b57\u7b26\u7684ASCII\u7801\u503c\u3002<\/li>\n
  • "%o"\uff1a\u4ee5\u516b\u8fdb\u5236\u5f62\u5f0f\u8f93\u51fa\u5b57\u7b26\u7684ASCII\u7801\u503c\u3002<\/li>\n<\/ul>\n
    \u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
    #include <stdio.h>\n\nint main() {\n    char c = 'A';\n\n    printf("\u5b57\u7b26\u5e38\u91cfc\u7684ASCII\u7801\u662f\uff1a%d\\n", c);\n    printf("\u5b57\u7b26\u5e38\u91cfc\u7684\u5341\u516d\u8fdb\u5236ASCII\u7801\u662f\uff1a%x\\n", c);\n    printf("\u5b57\u7b26\u5e38\u91cfc\u7684\u516b\u8fdb\u5236ASCII\u7801\u662f\uff1a%o\\n", c);\n\n    return 0;\n}\n<\/code><\/pre>\n
    \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u4e0d\u540c\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6765\u8f93\u51fa\u5b57\u7b26\u5e38\u91cfc\u7684ASCII\u7801\u503c\u3001\u5341\u516d\u8fdb\u5236ASCII\u7801\u503c\u548c\u516b\u8fdb\u5236ASCII\u7801\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"printf \u51fd\u6570\u662f C \u8bed\u8a00\u4e2d\u7528\u4e8e\u8f93\u51fa\u7684\u6807\u51c6\u5e93\u51fd\u6570\uff0c\u5b83\u80fd\u591f\u7528\u4e8e\u8f93\u51fa\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\uff0c\u5305\u62ec\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u548c […]","protected":false},"author":3,"featured_media":295627,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/295617"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=295617"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/295617\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/295627"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=295617"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=295617"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=295617"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}