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@chokkan /sum.c
Last active Dec 17, 2015

What would you like to do?
A 'buggy' code for calculating the sum of values in an input file.
#include <stdio.h>
int main(int argc, char *argv[])
FILE *fp = NULL;
double value, sum = 0;
fp = fopen(argv[1], "r");
if (fp = NULL) {
fprintf(stderr, "failed to open %s\n", argv[1]);
return 1;
while (fscanf(fp, "%f", &value) == 1) {
sum += value;
printf("%f\n", sum);
return 0;
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