#include <stdio.h>

#define SIZE    (16)

float  in[SIZE] = {  1,  -2,  3,  -4,
                     5,  -6,  7,  -8,
                     9, -10, 11, -12,
                    13, -14, 15, -16 };
float out[SIZE];

int main(int argc, char **argv)
{
    int i;

    for (i = 0; i < SIZE; i++) {
        if (in[i] > 0) {
            out[i] = in[i];
        } else {
            out[i] = in[i] * -1;
        }
    }

    for (i = 0; i < SIZE; i++) {
        printf("out[%02d]=%0.0f\n", i, out[i]);
    }

    return 0;
}