C print file line number

#include <stdio.h>

main ()
{
    FILE *fileToCount;
    fileToCount = fopen("testfile.txt", "r");

    int lnNum;
    scanf("%d", &lnNum);

    int il, c;
    il = 1;
    while ((c = fgetc(fileToCount)) != EOF)
    {
        if (c == '\n')
        {
            il++;
        }
        else if (il == lnNum)
        {
            printf("%c", c);
        }
    }

    printf("\n");
}