Find all pairs of integer array whose sum is equal to a given number.

#include < stdio.h > 
#include < stdlib.h >

  int main() {
    int arr[] = {1,2,3,4,5,6,3};
    int check;
    printf("Enter the number to be checked\n");
    scanf("%d", & check);
    // loop will run from 0 to (total Elements-2)
    for (int i = 0; i < 6; i++) {
      // loop will run from i+1 to (total Elements-1)
      for (int j = i + 1; j < 7; j++) {
        if ((arr[i] + arr[j]) == check) {
          printf("[%d,%d],", arr[i], arr[j]);
        }
      }
    }
    return 0;
  }