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Calling abort() causes abnormal program termination to occur unless the SIGABRT signal is caught and the signal handler calls exit() or _Exit().:
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#include <stdlib.h>
/* ... */
if (/* something really bad happened */) {
abort();
}
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In this compliant solution, the call to abort() is replaced with exit(), which guarantees that buffered I/O data is flushed to the file descriptor and the file descriptor is properly closed.:
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#include <stdlib.h>
#include <stdio.h>
int write_data(void) {
const char *filename = "hello.txt";
FILE *f = fopen(filename, "w");
if (f == NULL) {
/* Handle error */
}
fprintf(f, "Hello, World\n");
/* ... */
exit(EXIT_FAILURE); /* Writes data and closes f. */
/* ... */
return 0;
}
int main(void) {
write_data();
return EXIT_SUCCESS;
}
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