实验3

Posted 2020-11-23 zfdo

#include <stdio.h>
#include <stdlib.h>
int main() {
	int number, max, min, n;
    
	n=1;
	printf("输入第%d个数: ", n);
	scanf("%d", &number);
	max = number;
	min = number;
    
	while(n<=4) {
		n++;
		printf("输入第%d个数: ", n);
		scanf("%d", &number);	

        if(number>n)
			max = number;
		else if(number<n)
			min = number;
	}
    
	printf("最大数为: %d
", max);
	printf("最小数为: %d
", min);
	
	system("pause");
	
	return 0;
} 

　　

 

 

 

 

#include <stdio.h> 
#include <math.h>
int isprime(int n);
int main()
{
    int i,n;
    n=0;
    for(i=101;i<=200;i++)
    {
        if(isprime(i)) 
    {
        printf("%4d",i);
        n++;
        if(n%5==0)
        printf("
");
    }
}
return 0;
}
int isprime(int n)
{
    int k;
    for(k=2;k<=sqrt(n);k++)
    if(n%k==0)
    return 0;
    return 1;
}
    

 

 

 

 

 

#include<stdio.h>
#include<math.h>
int main()
{
    long int number;
    int i,n,s;
    s=0,n=0;
    
    printf("Enter a number :
 ");
    scanf("%ld",&number);
    
    for(;number!=0;)
    {
        i=number%10;
        number=number/10; 
        
        if (i%2!=0) 
        {
            n++;
            s+=pow(10,n)*i;
        }    
           
    }    
    printf("new number is : %ld",s/10);
    
    return 0;
 } 

对循环语句运用不熟练，仍要多加练习，算法要想半天