gets()和scanf（）混用问题 C语言中gets()和scanf的保存变值？？？
\u6c42\u52a9\uff1agets()\u548cscanf()\u51fd\u6570\u533a\u522b\uff0c\u8be6\u7ec6\uff1fgets()\u662f\u8bfb\u5165\u5b57\u7b26\u4e32
\u5982gets(str)\u8868\u793a\u8bfb\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\u7ed9str\u4e2d
scanf()\u662f\u683c\u5f0f\u8f93\u5165
\u5982scanf("%d",&a)\u662f\u6307\u8bfb\u5165\u4e00\u4e2aint\u7ed9a\uff0c\u5176\u4e2d%d\u662fint\u7684\u683c\u5f0f\u7b26
\u9996\u5148\uff0c\u6211\u4eec\u8981\u77e5\u9053\uff0c\u6211\u4eec\u4ece\u952e\u76d8\u91cc\u8f93\u5165\u7684\u6570\u636e\u662f\u5148\u4fdd\u5b58\u5728\u8f93\u5165\u6d41\u4e2d\uff0c\u7136\u540e\u624d\u88abscanf\u6216\u8005gets\u51fd\u6570\u8bfb\u5165\u5230\u5185\u5b58\u4e2d\u3002\u8fd9\u91ccscanf\u51fd\u6570\u548cgets/getchar\u5728\u8bfb\u5165\u6570\u636e\u65f6\u662f\u6709\u533a\u522b\u7684\uff0cget\u51fd\u6570\u4f1a\u8bfb\u5165\u8f93\u5165\u6d41\u91cc\u7684\u56de\u8f66\uff0c\u800cscanf\u51fd\u6570\u4f1a\u81ea\u52a8\u5ffd\u7565\u56de\u8f66\u3002\u6240\u4ee5\u4e00\u822c\u4e0d\u8981\u5c06get\u548cscanf\u6df7\u7528\u3002
\u4f8b\u5982\uff1a\u4f60\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\u52a0\u56de\u8f66
string\n
\u5148\u7528scanf\u8bfb\u5165\u83b7\u5f97string\u5b57\u7b26\u4e32
\u518d\u7528get\u51fd\u6570\u65f6\u8bfb\u5165\u7684\u662f\u56de\u8f66\u5b57\u7b26
scanf(..);输入字符按下回车键后，gets()函数会把回车键当做输入的字符。所以在执行gets()前要把回车过滤掉！！
改正后代码：
#include<stdio.h>
main()
{
char a1[5] = "",a2[5] = "",a3[5] = "",a4[5] = "";
scanf("%s%s",a1,a2);
printf("a1=%s
",a1);
printf("a2=%s
",a2);
printf("a3=%s
",a3);
printf("a4=%s
",a4);
printf("请输入a3:");
getchar(); //过滤回车
gets(a3);printf("a1=%s
",a1);
printf("a2=%s
",a2);
printf("a3=%s
",a3);
printf("a4=%s
",a4);
printf("请输入a4:");
gets(a4);
/*puts(a1);
puts(a2);
puts(a3);
puts(a4);*/
printf("a1=%s
",a1);
printf("a2=%s
",a2);
printf("a3=%s
",a3);
printf("a4=%s
",a4);
}
绛旓細2.scanf 锛氬綋閬囧埌鍥炶溅锛岀┖鏍煎拰tab閿細鑷姩鍦ㄥ瓧绗︿覆鍚庨潰娣诲姞'\0'锛屼絾鏄洖杞︼紝绌烘牸鍜宼ab閿粛浼氱暀鍦ㄨ緭鍏ョ殑缂撳啿鍖轰腑銆gets锛氬彲鎺ュ彈鍥炶溅閿箣鍓嶈緭鍏ョ殑鎵鏈夊瓧绗︼紝骞剁敤'\n'鏇夸唬 '\0'.鍥炶溅閿笉浼氱暀鍦ㄨ緭鍏ョ紦鍐插尯涓 3.gets浠庢爣鍑嗚緭鍏ヨ澶囪瀛楃涓插嚱鏁帮紝鍏跺彲浠ユ棤闄愯鍙栵紝涓嶄細鍒ゆ柇涓婇檺锛屼互鍥炶溅缁撴潫璇诲彇锛屾墍浠...
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绛旓細5
