week 8

/* Note:Your choice is C IDE */
#include "stdio.h"
#include "stdlib.h"
main()
{
int ia;
ia=rand();
printf("the random number is %d \n",ia);
}

/* Note:Your choice is C IDE */
#include "stdio.h"
#include "stdlib.h"
main()
{
int ia,ib;
ia=rand();
ib=ia%45+1;
printf("the random number is %d \n",ib);
}

/* Note:Your choice is C IDE */
#include "stdio.h"
#include "stdlib.h"
main()
{
int ia,ib,i;
for(i=0;i<10;i++)
{
ia=rand();
ib=ia%45+1;
printf("the random number is %d \n",ib);
}

/* Note:Your choice is C IDE */
#include "stdio.h"
#include "stdlib.h"
#define N 25
main()
{
int ia,ib,i,j;
int students
;
for(i=0;i<N;i++)
{
ia=rand();
ib=ia%45+1;
if(i>0)/*因为第一个数不可能重复 */
{
for(j=0;j<=i-1;j++)
{
if(ib==students[j])
{
ib=rand()%45+1;
j=-1;/*j=-1，继续返回执行for循环*/
}
}
}
students[i]=ib;
printf("the random number is %d \n",ib);
}
}