problem 13552

                Never    
C
       
#include<stdio.h>
int main(void){
      float a,b;
      float c;
      char operater;
      scanf("%f%c%f",&a,&operater,&b);
      switch (operater){
            case '+' :
            c=a+b;
            break;
            case '-' :
            c=a-b;
            break;
            case '*' :
            c=a*b;
            break;
            case '/' :
            c=a/b;
            break;
      }
      printf("%.3f\n",c);
      return 0;
}

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