#include<stdio.h>
int main (void){
  float a,b;
  char c;
  printf("Please input number op number:\n");
  scanf("%f %c %f",&a, &c, &b);

  if(c=='+'){
    printf("a+b=%f\n",a+b);
  } else if(c=='-'){
    printf("a-b=%f\n",a-b);
  } else if(c=='*'){
    printf("a*b=%f\n",a*b);
  } else if(c=='/'){
    printf("a/b=%f\n",a/b);
  } else{
    printf("Bad character!\n");
  }
}