Question

How to generate 3 combinations of X numbers in C

Answer 1

#include <stdio.h>
 
void Generate3CombinationOfXNumbers(int arr[], int size) {
    for (int i = 0; i < size; i++) {
        for (int j = i + 1; j < size; j++) {
            for (int k = j + 1; k < size; k++) {
                printf("%d %d %d\n", arr[i], arr[j], arr[k]);
            }
        }
    }
}
 
int main()
{
    int arr[] = { 1, 2, 3, 4, 5 };
    int size = sizeof(arr) / sizeof(arr[0]);
 
    Generate3CombinationOfXNumbers(arr, size);
 
    return 0;
}
 
 
 
/*
run:
 
1 2 3 
1 2 4 
1 2 5 
1 3 4 
1 3 5 
1 4 5 
2 3 4 
2 3 5 
2 4 5 
3 4 5 
 
*/

 

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