#include <stdio.h>
int main(void) {
 
       int sum = 0;
        for(int i=5;i<=50;i++)
 
       sum = sum + i; //or we can use sum += i
        {
            printf("%d is the answer\n", sum);
        }
    return 0;
}

#include <stdio.h>
int main(){
    int a,b,c;
    printf("Enter number : ");
    scanf("%d%d%d", &a,&b,&c);
    if(a == b && b == c){
        printf("Equal\n");
    }
    else {
        printf("Not Equal\n");
}
    return 0;
}

#include <stdio.h>

int main() {
  int n, i;
  printf("Enter a positive integer: ");
  scanf("%d", &n);
  for (i = 2; i < n; i++) {
    if (n % i == 0) {
      printf("%d is not a prime number\n", n);
      return 0;
    }
  }
  printf("%d is a prime number\n", n);
  return 0;
}

#include <stdio.h>
//decleration /prototype
void printhello();

int main() {
printhello();  //function call    
return 0;
}
//function decleration
void printhello(){
printf("Hello world\n");
}

#include <stdio.h>
void printhello();

int main() {
printhello();    
printhello();
printhello();
printhello();
return 0;
}
void printhello(){
printf("Hello world\n");
}

#include <stdio.h>
void Namaste();
void Bonjour();

int main() {
printf("Enter 'f' for french 'i' for indian : ");
char ch;
scanf("%c", &ch);
if(ch == 'i'){
    Namaste();
}
else {
    Bonjour();
}
return 0;
}
void Namaste(){
printf("Namaste\n");
}
void Bonjour(){
    printf("Bonjour\n");
}