c语言实现两个实数的四则运算,输入算式,得出结果,如输入23.2+65.5,输出...答:楼主好~(保留两位小数)main(){ double a,b;char x;printf("input:\n");scanf("%lf%c%lf",&a,&x,&b);switch(x){ case '+': printf("%.2lf\n",a+b); break;case '-': printf("%.2lf\n",a-b); break;case '*': printf("%.2lf\n",a*b); break;cas...
C语言求分数四则运算,不能运行?答:include<stdio.h> int main() { int a,b,c,d,x,y;int sum = 1,fz,fm;char op;scanf("%d%d",&a,&b);scanf("%c",&op);scanf("%d%d",&c,&d);switch(op) { case '+':x = a*d + b*c;y = b*d;break;case '-':x = a*d - b*c;y = b*d;break;case '*':...