实验三

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

void printCharMan(int line,int col);
void printSpaces(int n);

int main(){
    int line,col;
    
    for(line=5,col=5;col<=60;col++){
    printCharMan(line,col);
    Sleep(50);
    system("cls");
    
     }
      
}

void printSpaces(int n){
    int i;
    
    for(i=1;i<=n;i++)
    printf(" ");
    
}

void printCharMan(int line,int col){
    int i,j;
    for(i=1;i<=line-1;i++)
    printf("\n");
    
    printSpaces(col-1);
    
    printf(" o \n");
    
    printSpaces(col-1);
    
    printf("<H>\n");
    
    printSpaces(col-1);
    
    printf("I I\n");
}

 

#include<stdio.h>
#include<math.h>
int isPrime(int n);
int main(){
    int i,s,a=0;
    for(i=101;i<=200;i++){
        s=isPrime(i);
        if(s==i){
            printf("%5d",s);
            a=a+1;
            
        }
        if(s!=0&&a%5==0)
        printf("\n");
        
    }
    return 0;
} 

int isPrime(int n){
    int i,m;
    m=sqrt(n);
    for(i=2;i<=m;i++)
    if(n%i==0)break;
    if(i>m&&n>1)
    return n;
    else
    return 0;
}

 

#include <stdio.h>
double fun(int n);

int main(){
    int n;
    double s;
    
    printf("Enter n(1~10):");
    while(scanf("%d",&n)!=EOF){
        s=fun(n);
        printf("n=%d,s=%f\n\n",n,s);
        printf("Enter n(1-10):");
    }
    return 0;
}
double fun(int n){ 
  double s;
 int i,f=1 ,z=1;
 for(i=1,s=0;i<=n;)
 {
     f=f*i;
     s=s+z*1/f;
     z=-z;
     i++;
 }
 return s;
 }

 

#include<math.h>
#include<stdio.h>
void solve(double a,double b,double c);
int main(){
    double a,b,c;
     printf("Enter a,b,c:");
     while(scanf("%lf%lf%lf",&a,&b,&c)!=EOF){
          solve(a,b,c);
          printf("Enter a,b,c:");
     }
     return 0;
}


void solve(double a,double b,double c){
    double x1,x2;
    double delta,real,imag;
    
    if(a==0)
    printf("not quadratic equation.\n");
    else{
        delta=b*b-4*a*c;
        if(delta>=0){
            x1=(-b+sqrt(delta))/(2*a);
            x2=(-b-sqrt(delta))/(2*a);
            printf("x1=%.2f,x2=%.2f\n",x1,x2);
            
        }
        else{
            real=-b/(2*a);
            imag=sqrt(-delta)/(2*a);
            printf("x1=%.2f+%.2fi,x2=%.2f-%.2fi\n",real,imag,real,imag); 
        }
    }
}

 

#include<stdio.h>
int main(){
    long s,t,n;
    while(printf("Enter a number: "),scanf("%ld",&s)!=EOF) 
    {
        int m;
        t=0;
        n=1;
                
        while(s!=0)
        {
            m=s%10;
            
            if(m%2)
            {
                
                t=t+m*n;
                n=n*10;
                
            }
            s=s/10;
            
        }
        printf("New number is: %ld\n",t);
    }
    return 0;
    
}

 

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define N 5

int main() {
    int x, n, i; 
    printf("猜猜2021年5月哪一天会是你的 Lucky Day\n开始了,你有三次机会,猜吧(1~31):");
    srand(time(0));  // 以当前系统时间作为随机种子 
    x =1+ rand() % 31;  // 生成一个1~31之间的随机整数
    
    for (i=1;i<=3;){
    
        scanf("%d",&n);
             if (n==x){
                  printf("猜对啦!\n");
            break;
            
            }
        
            else if (n<x){
                   printf("你猜的日期早了,Luck Day还没到呢。\n");
                
            }
                         
            else {
            
                printf("你猜的日期晚了,Luck Day悄悄溜到前面啦。\n"); 
                
                }
            
            i++;    
            printf("再猜(1~31):");    
            
    if (i>3)
        printf("次数用完了,偷偷告诉你:5月,你的Luck Day是%d号。\n",x);
               
    }
        
    return 0;
}

 

#include<stdlib.h>
#include<time.h>
#define N 5

int main(){
    int x,n;
    
    srand(time(0));
    
    for(n=1;n<=N;n++){
        x=rand()%100;
        printf("%3d",x);
    }
    printf("\n");
    
    return 0; 
}

 

posted @ 2021-04-14 17:25  靓仔欧耶  阅读(53)  评论(1编辑  收藏  举报