Convert float to 16-bit integer to bytes

main.cpp

#include <stdio.h>
#include <stdint.h>

/**
 * Output result:
 *
 * Float: -172.500000
 * Integer (16 bit): -172
 * Bytes (as decimal): 84, -1
 * Result (integer 16-bit): -172
 */

int main() {
    float source = -172.5;

    printf("Float: %f\n", source);

    int16_t sourceInteger = static_cast<int16_t>(source);

    printf("Integer (16 bit): %d\n", sourceInteger);

    char *sourceBytes = static_cast<char*>(
        static_cast<void*>(&sourceInteger));

    printf(
        "Bytes (as decimal): %d, %d \n",
        sourceBytes[0],
        sourceBytes[1]);

    int16_t destinationInteger;

    char *destinationBytes = static_cast<char*>(
        static_cast<void*>(&destinationInteger));

    destinationBytes[0] = sourceBytes[0];
    destinationBytes[1] = sourceBytes[1];

    printf("Result (integer 16-bit): %d", destinationInteger);

    return 0;
}