c语言写四则运算...输入一个等式。。。再输入结果。。。判断正误...答:include<stdio.h> include<conio.h> void main(){ while(1){ int a=0,b=0,c=0,result,key;char d;printf("输入两个整数:\n");scanf("%d",&a);scanf("%d",&b);printf("选择算法 '+','-','*','/' \n");scanf(" %c",&d);printf("输入计算结果:\n");scanf("%d",&...