#include<stdio.h>
int main()
{double a,b,c;
char op;
scanf("%lf%c%lf",&a,&op,&b);
if(op=='+')c=a+b;
else if (op=='-')c=a-b;
else if (op=='*')c=a*b;
else if (op=='/')
if(b)c=a/b;
else {printf("除数不能为0!\n"); return 0;}
printf("%g%c%g=%g\n",a,op,b,c);
return 0;
}
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