How to do Quick Sort algorithm program

#include<stdio.h>
 int main()
 {

 int a,b, temp;

 printf ("A=");
 scanf("%d",&a);
 printf("B=");
 scanf("%d",&b);
 temp=a;
 a=b;
 b=temp;

 printf("A=%d",a);
 printf("B=%d",b);

 return 0;

}