Question

error running this c program . i’m getting an error like” case label doesnot reduce to an integer constant “. help me in finding my errors . i’m a newbie to c, started it a few weeks ago.thanks in advance

 #include<stdio.h>
 main()  
  { int a,b,c;
  scanf("%d",&c);
   if (c<5) {
    c==a  ;
   }
   else { c==b;
   }
    switch (c)
   {
    case a:
       printf ("statement1");
       break;
    case b :
       printf(" statement2");
     break;
    }
    }

Answer 1

I corrected your code. Please try it and give me a feedback:

#include <stdio.h>
using namespace std;
int main()
{
    int a,b,c;
    scanf("%d",&c);
    if (c<5)
    {
        a = c; //here you will use "=" because you want to a became c
     }
    else
    {
        b = c; //here you will use "=" because you want to b became c
    }
    /*--------IF-------------*/
    if(c==a) //here is a condition. you will use "=="
    {
        printf("statement1");
    }
    if(c==b) //here is a condition. you will use "=="
    {
        printf ("statement2");
    }
    /*--------SWITCH-------------*/
    switch (c)
    {
    case 1: //if c is 1
    case 2: //if c is 2
    case 3: //if c is 3
    case 4: //if c is 4
    printf("statement1"); //"statement1" will appear
    break;
    default: printf("statement2"); //if c >= 5 "statement2" will appear
    }
    return 0;
}