Tibor Nagy
d1a424c002
This will allow us to redefine the exit function.
For example:
```
#define exit(code) { \
fprintf(stderr, "%s:%d: exit(%s) in function ‘%s’\n",
__FILE__, __LINE__, #code, __func__); \
_exit(code); \
}
```
29 lines
475 B
C
29 lines
475 B
C
#include <stdio.h>
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#include <stdlib.h>
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int main(void) {
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FILE *fp;
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int status;
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char path[256];
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fp = popen("ls -1 example_dir", "r");
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if (fp == NULL) {
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perror("popen");
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exit(EXIT_FAILURE);
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}
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while (fgets(path, 256, fp) != NULL) {
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printf("%s", path);
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}
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status = pclose(fp);
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if (status == -1) {
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perror("pclose");
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exit(EXIT_FAILURE);
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} else {
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printf("status %x\n", status);
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}
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}
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