int main()
{
printNos(100);
getchar();
return 0;
}

This is the correct code. When using unsigned integer you use the correct specifier. The specifier for unsigned integer is “%u” and for signed integer is “%d”.

This is still not the answer to the question as the OP wants none of the methods. This code is showing recursion. The fuction printNos is calling itself until its stack gets cleared at the last condition failing( 0>0).

Here is the output
http://codepad.org/77JdYHc4

void printNos(unsigned int n)
{
if(n > 0)
{
printNos(n-1);
printf(“%d “, n);
}
return;
}

int main()
{
printNos(100);
getchar();
return 0;
}

If you simply want to print numbers 1-100 then you can just print them one by one.