lottery155.c

随机产生彩票15选5 的号码

#include <stdio.h>
#include <time.h>
#define MAX_SIZE 15
#define NUM_IN_ONEGROUP 5
int lotnumber[MAX_SIZE];
void lotteryget(void);
void swap(int i, int j );
main()
{
int i;
int ak;
time_t bx;
struct tm by, *p;
	p = &by;
	bx = time(NULL);
	p = localtime(&bx);
	ak = (p->tm_sec);
	srand(ak); 
for(i = 0; i < MAX_SIZE;i++){
lotnumber[i] = 1+i;
}

for(;;){
        getch();
        lotteryget();
}
}

void lotteryget()
{
int i = 0 ;int j = 0;
int count = -1;int choose = 0;
int count1 = NUM_IN_ONEGROUP; 
int bottem = MAX_SIZE - 1;
int newtotal = MAX_SIZE;
int group = MAX_SIZE / NUM_IN_ONEGROUP;
printf("\n Wellcome and may you lucky!! \n");
printf("The lottery number I picked is : \n");
for(i = MAX_SIZE; i > 0 & count < group; i --){
choose = rand() % newtotal;
swap(bottem,choose);
if(j % NUM_IN_ONEGROUP == 0){
count++;
printf("\n The next lucky number is : \n");
} 
printf(" %d " , lotnumber[bottem]);
bottem--;
newtotal--;
j++;
}

if(i>0){
bottem=MAX_SIZE - 1;
newtotal = MAX_SIZE;
for(;i > 0; i--){
swap(bottem,i );
printf(" %d " , lotnumber[bottem]);
bottem--;
count1--;
}
for(j=0;j < count1;j++){
choose = rand() % newtotal;
swap(bottem,choose);
printf(" %d " , lotnumber[bottem]);
}
}
}


void swap(int i,int j){
int temp = lotnumber[i];
lotnumber[i] = lotnumber[j];
lotnumber[j] = temp;
}