#include<stdio.h> int main(void) { double valuel,value2; char op; printf("Type in an expression:"); scanf("%lf%c%lf",&valuel,&op,&value2);
if(op=='-') printf("=%.2f
",valuel+value2); else if(op=='-') printf("=%.2f
",valuel-value2); else if(op=='*') printf("=%.2f
",valuel*value2); else if(op=='/') printf("=%.2f
",valuel/value2); else printf("Unknown operator
"); return 0; }