suma perechi nr consecutive

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

int main()
{
    int n,i;
    printf("Introdu un  numar impar:");
    scanf("%d",&n);
    int k =1 ;
    for(i=1;i<=n;i++){
        //printf("Suntem la iteratia %d", i);

        int ok = 1;
        while(ok==1){
            //printf("In For suntem la iteratia: %d, In while suntem la iteratia %d", i,k);
            if((k+k+1)%n==0){
                printf("%d %d",k,k+1);
                k++;
                ok=0;
            }else{
                k++;
            }
        }
        printf("\n");

    }
    return 0;
}