rand.cpp

来自「用来产生随机数的函数」· C++ 代码 · 共 31 行

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>

unsigned int RandomNumber()
{
	unsigned int nRandomNumberLen;
	unsigned int nRandomNumber= 0;

	srand(time(NULL));	
	nRandomNumberLen = rand() % 9 +1;
	
	for (unsigned int i=0; i < nRandomNumberLen; i++)
	{
		nRandomNumber *= 10;
		nRandomNumber += rand() % 9 + 1;	
	}

	return nRandomNumber;	
}

int main()
{
	unsigned int nRandomNumber = RandomNumber();

	printf("nRandomNumber = %d\n", nRandomNumber);
	
	return 0;
}