Plz suggest how to fix this 'BUG" in my code.?

How to remove this bug from my code????

#include < stdio.h >
#define LAST 10

int main()
{
int i, sum = 0;

for ( i = 1; i < = LAST; i++ )
{
sum += i;
}

/*-for-*/
printf("sum = %d\n", sum);
return 0;
}