nwd.c

#include <stdio.h>

int nwd(int a, int b){
  int c;
  while(b!=0){
    c=a%b;
    a=b;
    b=c;
  }
  return a;
}

int main(){
  int a,b;
  printf("Podaj a: ");
  scanf("%d",&a);
  printf("Podaj b: ");
  scanf("%d",&b);
  printf("NWD %d %d to %d",a,b,nwd(a,b));
  return 0;
}