十进制转二进制-使用do while 、while 、for循环实现

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <math.h>


//位转换
/*
6%2 = 0
3%2 = 1
1%2 = 1
*/
void 十进制转二进制() {
	printf("输入十进制\n");
	int  *pNum = (int*)malloc(1 * sizeof(int));
	scanf("%d", pNum);
	//数组
	int * pResult = (int *)malloc(1000 * sizeof(int));
	printf("二进制是:\n");
	int count = 0;
	/*do {			//使用do while方式
	*(pResult + count) = *pNum % 2;
	printf("count = %d\n", count);
	count++;
	*pNum = *pNum / 2;
	} while (*pNum);*/

	//while (*pNum) {	//使用 while方式
	//	*(pResult + count) = *pNum % 2;
	//	printf("count = %d\n", count);
	//	count++;
	//	*pNum = *pNum / 2;
	//}
	for (; *pNum; count++) { //使用For循环方式
		*(pResult + count) = *pNum % 2;
		printf("count = %d\n", count);
		*pNum = *pNum / 2;
	}
	printf("count->%d\n", count);
	for (int i = count - 1; i >= 0; i--) {
		printf("%d", *(pResult + i));
	}
	printf("\n");
	free(pNum);
	free(pResult);
}