不太难的编程

#include "stdio.h"
#include "stdlib.h"
#include "time.h"
void main()
{int i,r,n=0;
srand((unsigned)time(NULL));
for(i=1;i<51;i++)
{r=rand()%100;
printf("%d ",r);
if(r<50)n++;
}
printf("\n小于50的有:%d个\n",n);
}

#include "iostream"
#include "stdlib.h"
#include "time.h"
using namespace std;

int main()
{
srand( (unsigned)time( NULL ) );

int a, num = 0;

for ( int i = 0; i < 100 ++i) {
a = rand()%100;
if ( a < 50 )
num ++;
}

cout << num << endl;

return 0;
}

产生99个0~99的随机整数，统计小于50的数有多少个：

//---------------------------------------------------------------------------

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

int main(void)
{<