从标准输入设备读入整数k, 利用位运算得到它在内存中存储的二进制并输出.

Input
第一行是T（T<=100）, 表明后面有T组测试数据，每组是一行整数, 范围为 [-2^31, 2^31 – 1], 其中’^’代表幂运算.

Output
对应每一组测试数据, 输出其在内存的二进制(按32位输出), 占一行


Sample input and output
Sample Input    Sample Output
2              
0               00000000000000000000000000000000
-1               11111111111111111111111111111111

#include <string.h>

void to_binary( int value, char out[static 33] )
{
    unsigned val = (unsigned)value;
    for( unsigned i=0; i<32; ++i )
        out[31-i] = "01"[(val&(1u<<i))!=0];
    out[32] = '\0';
}

#include <assert.h>

int main( void )
{
    char dest[33];

    to_binary( 0, dest );
    assert( strcmp(dest,"00000000000000000000000000000000") == 0 );

    to_binary( 1, dest );
    assert( strcmp(dest,"00000000000000000000000000000001") == 0 );

    to_binary( -1, dest );
    assert( strcmp(dest,"11111111111111111111111111111111") == 0 );
}