#include ""int main(){ int a,b,c; do { system("cls"); printf(" 计算器菜单\n"); printf("========================\n"); printf("1:计算 a+b\n"); printf("2: 计算 a-b\n"); printf("3: 计算 a*b\n"); printf("4: 计算 a/b\n"); printf("5: 计算 a%b\n"); printf("0: 退出\n"); printf("请选择(0-5):"); scanf("%d",&c); if(c!=0) { printf("请输入a:"); scanf("%d",&a); printf("请输入b:"); scanf("%d",&b); switch(c) { case 1: printf("a+b=%d",a+b); break; case 2: printf("a-b=%d",a-b); break; case 3: printf("a*b=%d",a*b); break; case 4: printf("a/b=%d",a/b); break; case 5: printf("a%b=%d",a%b); break; default: break; } printf("\n按任意键继续......"); getch(); } } while(c!=0); return 0;}