/***************************OUTPUT***************************\
| [kohlrak@kohlrak-server ac3]$ g++ main.cpp                 |
| main.cpp: In function ‘unsigned char* bin2str(uint32_t)’:  |
| main.cpp:7:30: error: expected ‘;’ before ‘loopy’          |
|   for(int loopy = 31; loopy+1 loopy--) ret[loopy]='0';     |
|                               ^~~~~                        |
| [kohlrak@kohlrak-server ac3]$ vim main.cpp                 |
| [kohlrak@kohlrak-server ac3]$ g++ main.cpp                 |
| [kohlrak@kohlrak-server ac3]$ ./a.out                      |
| 11101101110010111010100110000111                           |
| [kohlrak@kohlrak-server ac3]$                              |
\************************************************************/

#include <stdio.h>
#include <cstdint>

unsigned char* bin2str(uint32_t x){
        const int sizeofint = 32;
        static unsigned char ret[sizeofint+1];
        for(int loopy = sizeofint-1; loopy+1; loopy--) ret[loopy]='0';
        for(uint32_t key = sizeofint-1; key+1; key--) ret[sizeofint-1-key] += (x&(1<<key))>>key;
        return ret;
}
int main(){
        printf("%s\n", bin2str(0xEDCBA987));
        return 0;
}