Write a c program to check greater of three numbers

#include<stdio.h> 
 main() 
 { 
        int a,b,c; 
        printf("Enter the Four Numbers :"); 
        scanf("%d %d %d",&a,&b,&c); 
        if(a>b) 
         { 
              if(a>c) 
               { 
                 printf("%d is greater",a);                  
                 else 
                   { 
                      printf("%d is greater",c); 
                    } 
               } 
           } 
              else if(b>c) 
                      { 
                          printf("%d is greater",b);                              
                             else 
                              { 
                                  printf("%d is greater",c); 
                              } 
                        }
  getch();           
 }