Using - C
  
 Source Code
  

    
      #include<stdio.h>
      void main() {
        int num, i;  
        printf("Enter a Positive Integer: ");
        scanf("%d", &num);
          
        printf("Factors of %d are: ", num);
          
        for(i = 1; i <= num; ++i) {
              if(num % i == 0) {
                  printf("%d  ", i);
              }
          }
      }
      
    

Enter a Positive Integer:   12
Factors of 12 are:   1    2    3    4    6    12 

        
Using - C++
        
 Source Code
        

        
            #include<iostream>
using namespace std;
int main() {
  int num;
  cout<<"Enter a Positive Integer: ";
  cin>> num;
             
  cout<<"Factors of "<< num<< " are: ";
                
    for(int i=1; i <= num; ++i) {
        if(num % i == 0) {
          cout<< i<< "  ";
        }
    }            
  return 0;
}
      

Enter a Positive Integer:   6
Factors of 6 are:   1    2    3    6