#include<stdio.h> int main(){ int days; printf("输入一个整数:\n") ; scanf("%d",&days); if(days<=5) printf("是工作日"); else printf("非工作日"); return 0; }
#include<stdio.h> int main(){ char ch; printf("输入一个字符:\n") ; scanf("%c",&ch); if('ch'>=97) ch=ch-32; printf("%c\n",ch); return 0; }
/*判断奇偶*/ # include<stdio.h> int main() {int x; printf("输入一个整数:\n"); scanf("%d",&x); if(x%2==0) printf("是偶数"); else printf("是奇数"); return 0; }