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# include<stdio.h>

int main(void)

{

         double value1,value2;

         char op;

         printf("Type in an expression:");

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

         if(op=='+')

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

else if(op=='-')

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

else if(op=='*')

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

else if(op=='/')

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

else

printf("Unknown operator\n");

return 0;

}