#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,&op,&value2); else if(op=='-') printf("=%.2f
",valuel-value2); else if(op=='*') printf("=%.2f
",valuel*value2); else if(op=='/') if(value2!=0) printf("=%.2f
",valuel/value2); else printf("Divisor can not be 0!
"); else printf("Unknown operator!
"); return 0; }