- #include<stdio.h>
- int main()
- {
- double a,b,ans;
- char c;
- scanf("%lf%c%lf",&a,&c,&b);
- switch(c)
- {
- case '+': ans = a+b;break;
- case '-': ans = a-b;break;
- case '*': ans = a*b;break;
- case '/': ans = a/b;break;
- }
- printf("%.2lf+%.2lf=%.2lf\n",a,b,ans);
- return 0;
- }
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