#include <stdio.h>

main()
{
        int n=1, m=2;
        printf("Hello World!\n");
        printf("%d\t%d\n, 1, 2);
}

test.c: In function ‘main’:
test.c:7: error: missing terminating " character
test.c:8: error: expected expression before ‘}’ token
test.c:8: error: expected ‘;’ before ‘}’ token