Untitled

#include<stdio.h>
#include<math.h>
int gcd(int a, int b, int*d1,int*x4,int*y4){
	int x,y,d,x2=1,x1=0,y2=0,y1=1,q,r;
	
	if(b==0){
		d = a;
		x = 1;
		return(d,x,y);
	}
	
	else if(b>0){
		do{
			q = floor(a/b);
			r = a - (q*b);
			x = x2 - (q*x1);
			y = y2 - (q*y1);
			a = b; 
			b = r; 
			x2 = x1; 
			x1 = x; 
			y2 = y1; 
			y1 = y;
		}while(b>0);
		*d1 = a;
		*x4 = x2;
		*y4 = y2;
		return(a);
	}
	
}

int main(){
	int a ,b,d,e,f,g ;
	
	
	printf("enter positive interger a");
	scanf("%d",&a);
	printf("enter positive integer b such that a>=b");
	scanf("%d",&b);
	g = gcd(a,b,&d,&e,&f);
	printf(" %d= %d x %d + %d x %d",d,a,e,b,f);
}