#include <stdio.h>

int add();

int main() {
    int n1=5,n2=6,c;
    
    while(1){       //infinity loop while(1){}
    c=add();
    printf("%d",c);
    printf("\n");
    }
    return 0;
}

int add(){
    static int a;
    if(a==50){
        a=100;
    }
    else{
        a=50;
    }
    return a;
}

#if 0

#include<stdio.h>
int fun()
{
  static int count = 0;                   if int count = 0;
  count++;
  return count;
}
  
int main()
{
  printf("%d ", fun());
  printf("%d ", fun());
  return 0;
}

output = 1 2;                             output = 1 1;

#endif

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