瀹為獙4

Posted 2020-12-22

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#include<stdio.h>
long long fac( int n );
int main()
{
    int i,n;
    printf("Enter n:");
    scanf("%d",&n);
    for( i=1;i<=n;++i )
    {
        printf("%d!=%11d
",i,fac(i));
    }
    return 0;
 } 
 
 long long fac( int n )
 {
     static long long p=1;
     printf("p=%d ",p);
     p *= n;
     return p;
 }

#include<stdio.h>
#define N 1000
int fun( int n,int m,int bb[N] )
{
    int i,j,k=0,flag;
    for( j=n;j<=m;j++ )
    {
        flag=1;
        for( i=2;i<j;i++ )
        {
            if( j%i==0 )
            {
                flag=0;
                break;
            }
        }
        if( flag!=0 )
        bb[k++]=j;
   }
   return k;
}


int main()
{
    int n=0,m=0,i,k,bb[N];
    scanf("%d",&n);
    scanf("%d",&m);
    for( i=0;i<m-n;i++ )
    {
        bb[i]=0;
    }
    k=fun( n,m,bb );
    for( i=0;i<k;i++ )
    printf("%4d",bb[i]);
    return 0;
}

#include<stdio.h>
long long fun( int n );
int main()
{
    int n;
    long long f;
    while( scanf("%d",&n) != EOF )
    {
        f=fun(n);
        printf("n=%d,f=%11d
",n,f);
    }
    return 0;
}


long long fun( int n )
{
    long long i,sum=1;
    for( i=1;i<=n;i++ )
    {
        sum*=2;
    }
    return sum-1;
}

#include<stdio.h>
void draw( int n,char symbol );
int main()
{
    int n,symbol;
    while( scanf("%d %c",&n,&symbol) != EOF )
    {
        draw( n,symbol );
        printf("
");
    }
    return 0;
}



void draw( int n, char symbol )
{
    int line=0,i=0;
    for( line=1;line<=n;line++ )
    {
        for( i=1;i<=5-line;i++ )
        {
            printf(" ");
        }
        for( i=1;i<=2*line-1;i++)
        {
            printf("%c",symbol);
        }
        printf("
");
    }
}