Read command function

#include <stdio.h>
#include <stdlib.h>


char *read_command(char *command) {
    FILE *fp;
    char *output;
    output = malloc(10);
    fp = popen(command, "r");
    if (fp == NULL) {
        exit(1);
    } else {
        fscanf(fp, "%s", output);
    }
    pclose(fp);
    return output;
}


int main() {
    char *out;
    out = read_command("xdotool getwindowname $(xdotool getactivewindow)");
    printf("Active Window => %s\n", out);
    return 0;
}