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//04-0. 求符合给定条件的整数集
#include <stdio.h>
int main(){
int n,x,y,z,cnt=0;
printf("请输入一个不超过6的数：n");
scanf("%d",&n);
for(x = n ; x < n+4 ; x++){
for(y = n ; y < n+4 ; y++){
for(z = n ; z < n+4 ; z++){
if(x != y && x != z && y != z){
printf("%d%d%d ",x,y,z);
cnt++;
if(cnt%6==0){
printf("n");
}
}
}
}
}
return 0;
} 

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//04-1. 水仙花数
#include <stdio.h>
#include <math.h>
int main(){
int n,x,y,z,s=0,t,start,end;
printf("请输入一个三到七的数字:n");
scanf("%d",&n);
start = pow(10,n-1);
end = pow(10,n)-1;
for(x = start; x <= end; x++){
t = start;
y = x;
while(t>0){
z = y / t;
s += pow(z,n);
y %= t;
t /= 10;
}
if(x == s){
printf("%dn",x);
}
s = 0;
}
return 0;
}

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//04-2. 打印九九口诀表
#include <stdio.h>
int main(){
int n, i, j;
printf("Please input a number from 1 to 9:n");
scanf("%d",&n);
for(i = 1; i <= n; i++){
for(j = 1; j <= i; j++){
printf("%d*%d=%-4d",j,i,i*j);
}
printf("n");
}
return 0;
}

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//04-3. 统计素数并求和
#include <stdio.h>
int main(){
int m,n,cnt=0,sum=0,i,j,flag;
printf("请输入两个数字，以代表一个区间:n");
scanf("%d%d",&m,&n);
for(i = m; i <= n; i++){
flag=0;
for(j = 2; j < i; j++){
if(i % j == 0){
flag = 1;
break;
}
}
if(flag == 0){
cnt++;
sum += i;
}
}
printf("%d %d",cnt,sum);
return 0;
}

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//04-4. 猜数字游戏
//原题
#include <stdio.h>
int main(){
int num, n, m, cnt=0;
printf("输入两个数，随机数和最大猜测次数:n");
scanf("%d%d",&num,&n);
while(true){
scanf("%d",&m);
if(m < 0){
break;
}
cnt++;
if(m == num){
if(cnt == 1){
printf("Bingo!n");
break;
}
else if(1 < cnt && cnt <=3){
printf("Lucky You!n");
break;
}
else if(3< cnt && cnt <= n){
printf("Good Guess!n");
break;
}
}
else if(m < num){
printf("Too smalln");
}
else{
printf("Too bign");
}
if(cnt > n){
printf("Game Overn");
break;
}
}
return 0;
} 

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//改编版
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(){
srand(time(0));
int num = rand()%100;//生成100以内的随机数
int m, n, cnt = 0;
printf("输入一个数代表最大猜测次数:n");
scanf("%d",&n);
while(true){
scanf("%d",&m);
if(m < 0){
break;
}
cnt++;
if(m == num){
if(cnt == 1){
printf("Bingo!n");
break;
}
else if(1 < cnt && cnt <=3){
printf("Lucky You!n");
break;
}
else if(3< cnt && cnt <= n){
printf("Good Guess!n");
break;
}
}
else if(m < num){
printf("Too smalln");
}
else{
printf("Too bign");
}
if(cnt > n){
printf("Game Overn");
break;
}
}
return 0;
}