#include<stdio.h>
    #include<stdlib.h>
    int main(){
       char buffer[100];
    FILE  *iodir;

        ioval = fopen("/sys/class/gpio/gpio2/value", "w");

        fgets(buffer , 100 , iodir);
    fputs(buffer, stdout);
        fclose(iodir);

        return 1;
    }