#include <stdio.h>

int main() {
    
    float a , b , c , d;
    
    printf("enter the numbers\n");
    scanf(" %f %f %f %f" , &a , &b , &c , &d);
    
   
    if(a > b && a > c && a > d){
        
        printf("a is the greatesr number %f" , a);
    }
    
     if(b > a && b > c && b > d){
        
        printf("b is the greatesr number %f" , b);
    }
    
     if(c > b && c > a && c > d){
        
        printf("c is the greatesr number %f" , c);
    } 
    
    
    if(d > b && d > c && d > a){
        
        printf("d is the greatesr number %f" , d);
    }
	//code
	return 0;
}