void stdin_function () {

    char *ch;
    int size = 10;
    int new_line = 0; //number of new lines
    ch =  malloc (size * sizeof(char));
    int i;
    for (i = 0;scanf("%c",&ch[i]) != EOF;i++) {
        if(i >= size) {
            size += 2;
            ch = realloc (ch,size);
        }
    }
    int reverse = i - 1;        //counts in the reversed loop (i-1) is because we want the index
    char arr[size];         //static arr with capacity size
    int br = -1;            //the counter which will be used to go through arr
    for(;reverse != -1; reverse --) { // -1 we want to read the 0 element too
        if(ch[reverse] == '\n') {
            new_line ++;
            if (new_line == 11) break; //breaks if we have read 10 \n
        }
        arr[++br] = ch[reverse];    //++br to become 0 in the beginning and to have br as the index not the size
    }

    for (; br > -1 ;br -- ) {
        write(STDOUT_FILENO,&arr[br],1);
    }
    free(ch);
}