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#include<stdio.h>

int main(void)

{

         double value1,value2;

         char op;

 

         printf("Type in a impression:");

         scanf("%lf%lf",&value1,&op,&value2);

         switch(op){

         case'+':

                   printf("=%.2f\n",value1+value2);

                   break;

         case'-':

                   printf("%.2f\n",value1-value2);

                  break;

         case'*':

                   printf("%.2f\n",value1*value2);

                   break;

         case'/':

                   printf("%.2f\n",value1/value2);

                   break;

         default:

                   printf("Unknown operator\n");

                   break;

         }

 

         return 0;

         }