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#include#include #pragma warning(disable:4996)#define PASSWORD "xys321"int main(){ char psw[10] = " "; int i = 0; for (i = 0; i < 3; i++) { printf("please input password:"); scanf("%s", psw); if (0 == strcmp(psw, PASSWORD))//字符串比较不能直接用==,因为不存在字符串类型,必须使用函数strcmp. { printf("Login sussess!\n"); break; } } if (3 == i) { printf("Login Failed,please try again 60s\n"); } system("pause"); return 0;}