Thread: Why this code gives a segmentation fault error?

Hi there,

I don't know why this code gives a segmentation fault error,

Code:

# include <stdio.h>
# include <math.h>

long move(int GoRight, int GoDown) {
    long i = 0;
    if (GoRight > 0) {
        i = i + 1 + move(GoRight - 1, GoDown);
    }
    if (GoDown > 0) {
        i = i + 1 + move(GoRight - 1, GoDown);
    }
    return i;
}

int main(void) {
    printf("%ld\n", move(2, 2));

    return 0;
}

while the one below doesn't:

Code:

# include <stdio.h>
# include <math.h>

long move(int GoRight) {
    long i = 0;
    if (GoRight > 0) {
        i = i + 1 + move(GoRight - 1, GoDown);
    }
    return i;
}

int main(void) {
    printf("%ld\n", move(2));

    return 0;
}

Some hints, please?

Because the first one is infinite recursion because it has no stopping condition for GoDown above zero.

Tim S.

Thank you very much Tim. I didn't spot that typo. The problem is now fixed.

Xianwen