Answer / Omendra Kumar Shukla

In C, you can use the `system()` function to execute a command and get its output. Here's an example of invoking the `ls` command and trapping its output:nn```cn#include <stdio.h>n#include <stdlib.h>nnint main() {n char command[] = {"ls"};n int status;n FILE* pipe = popen(command, "r");n char buffer[128] {};n while(!feof(pipe)) {n fgets(buffer, sizeof buffer, pipe);n printf("%s", buffer);n }n pclose(&pipe);n return 0;n}n```

What is output redirection?

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What is this infamous null pointer, anyway?

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4. main() { int c=- -2; printf("c=%d",c); }

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What are the advantage of c language?

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AMMONG THE 4 STROAGE CLASSES IN C, WHICH ONE FASTEST?

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