#include <stdio.h>

int main(int argc, char *argv[]) {
    int i, x;
    for(i = 0, x = 42; i < 9001, x > 2; i++, x--) {
        printf("i = [%i], x = [%i]i\n", i, x);
    }
    return(0);
}

/*

$ gcc -o doubleloop doubleloop.c
$ ./doubleloop
i = [0], x = [42]i
i = [1], x = [41]i
i = [2], x = [40]i
i = [3], x = [39]i
i = [4], x = [38]i
i = [5], x = [37]i
i = [6], x = [36]i
i = [7], x = [35]i
i = [8], x = [34]i
i = [9], x = [33]i
i = [10], x = [32]i
i = [11], x = [31]i
i = [12], x = [30]i
i = [13], x = [29]i
i = [14], x = [28]i
i = [15], x = [27]i
i = [16], x = [26]i
i = [17], x = [25]i
i = [18], x = [24]i
i = [19], x = [23]i
i = [20], x = [22]i
i = [21], x = [21]i
i = [22], x = [20]i
i = [23], x = [19]i
i = [24], x = [18]i
i = [25], x = [17]i
i = [26], x = [16]i
i = [27], x = [15]i
i = [28], x = [14]i
i = [29], x = [13]i
i = [30], x = [12]i
i = [31], x = [11]i
i = [32], x = [10]i
i = [33], x = [9]i
i = [34], x = [8]i
i = [35], x = [7]i
i = [36], x = [6]i
i = [37], x = [5]i
i = [38], x = [4]i
i = [39], x = [3]i

*/