实验三

#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<5){
n++;
printf("输入第%d个数:",n);
scanf("%d",&number);
if(max<number)
     max=number;
else if(min>number)
     min=number;
}
printf("最大数为:%d\n",max);
printf("最小数为:%d\n,min);
system("pause");
return 0;
}

#include<stdio.h>
#include<math.h>
int main()
{
    int m,i;
    int sum=0;
        for(m=101;m<201;m++)
        {
            for(i=2;i<m;i++){
        
             if(m%i==0) 
             break;
        }
             if(i>=m){
             
              printf("%4d",m);
              sum++;
             if(sum%5==0)
        printf("\n");
        }
        
        }
        printf("\n共有%d个素数",sum);
        printf("\n");
        return 0;                
}

#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;
 }