I was coding up a short program to compute right endpoints for a given graph (not shown here), so to avoid tedious computation, I decided to write up a short program to do the work for me. Yet my C program just prints out nan. I am very rusty on C, but I am not sure why I am getting NaN.
#include <stdio.h>
int main(void) {
int x;
float y, z;
for (x = 0; x <= 8; x++) {
y += 10.0 - (12.0 + (float)x) / 4.0;
printf("%f\n", y);
}
z = 0.5 * y;
printf("%f\n", z);
return 0;
}
Followed by
This makes sense else you have
y
uninitialized which leads to undefined behavior because the value ofy
is undeterminate. During declaration you can initializey
and use+=
operator.Like