Brianegge: Created page with "Example of how to use WEXITSTATUS #include void run(const char * cmd) { printf("Executing command %s\n", cmd); int status = std::system(..."

2012-07-03T12:13:41Z

Created page with "Example of how to use WEXITSTATUS <geshi lang="c"> #include <iostream> void run(const char * cmd) { printf("Executing command %s\n", cmd); int status = std::system(..."

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Example of how to use WEXITSTATUS
<geshi lang="c">

#include <iostream>

void run(const char * cmd) {
printf("Executing command %s\n", cmd);
int status = std::system(cmd);
printf("raw status %d\n", status);
if (status == -1) {
printf("fork failed\n");
} else if (WIFEXITED(status)) {
printf("terminated with exit status %d\n",
WEXITSTATUS(status));
} else {
printf("terminated abnormally\n");
printf("You can't use WEXITSTATUS here, cause if you did you would get %d\n", WEXITSTATUS(status));
}
printf("\n");
}

int main(int argc, char *argv[])
{
printf("argc: %d\n", argc);
if (argc > 1) {
printf("prepare to die!\n");
return *(int*)(0);
}
run("/bin/true");
run("/bin/false");
run("/bin/maybe");
run("./a.out Oh no");
return 0;
}
</geshi>

The output is:
<pre>
argc: 1
Executing command /bin/true
raw status 0
terminated with exit status 0

Executing command /bin/false
raw status 256
terminated with exit status 1

Executing command /bin/maybe
sh: /bin/maybe: No such file or directory
raw status 32512
terminated with exit status 127

Executing command ./a.out Oh no
argc: 3
prepare to die!
raw status 139
terminated abnormally
You can't use WEXITSTATUS here, cause if you did you would get 0
</pre>

WEXITSTATUS Example - Revision history

Brianegge: Created page with "Example of how to use WEXITSTATUS #include void run(const char * cmd) { printf("Executing command %s\n", cmd); int status = std::system(..."