u6.txt

CProgramming C学习的好书

4--------------------------
#include <stdio.h>
void main()
{
	int i=0,k,ch;
	static int num[5];
	char alpha[]={'a','e','i','o','u'},in[80];

	while ((in[i++]=getchar())!='?');
	in[i]='\0';
	i=0;
	while(in[i]){
		for(k=0;k<5;k++)
			if(in[i]==alpha[k]){
				num[k]++;
				break;
			}
			i++;
	}
	for(k=0;k<5;k++)
		if(num[k]) printf("%c%d",alpha[k],num[k]);
	printf("\n");
}
5--------------------------
#include <stdio.h>
void main()
{
	int i,n,a;
	float sum=0;

	printf("Input n:\n");
	scanf("%d",&n);
	printf("Input %d numbers:\n",n);

	for (i=0;i<n;i++)
	{
		scanf("%d",&a);
		sum=sum+a;
	}

	printf("Average=%.2f\n",sum/n);
}
6--------------------------
#include <stdio.h>
void main()
{
	int a[10],n,i;

	printf("Input n:\n");
	scanf("%d",&n);

	printf("Input %d numbers:\n",n);
	for (i=0;i<n;i++)
	{
		scanf("%d",&a[i]);
	}

	printf("After sorted:\n");
	for (i=n-1;i>=0;i--)
	{
		printf("%-6d",a[i]);
	}
	printf("\n");
}
7--------------------------
#include <stdio.h>
void main()
{
	int a[10],n,i,max,index;

	printf("Input n:\n");
	scanf("%d",&n);

	printf("Input %d numbers:\n",n);
	for (i=0;i<n;i++)
	{
		scanf("%d",&a[i]);
	}

	max=a[0];
	for (i=0;i<n;i++){
	if (a[i]>max)
	index=i;max=a[i];
	}
	
	printf("Max=%d ,Index=%d",a[index],index);
}
8--------------------------
#include <stdio.h>
void main()
{
	int a[10],n,i,k,temp,index1=0,index2=0;

	printf("Input n:\n");
	scanf("%d",&n);

	printf("Input %d numbers:\n",n);
	for (i=0;i<n;i++)
	{
		scanf("%d",&a[i]);
	}

	for(k=0;k<n-1;k++){
		for(i=k+1;i<n;i++)
			if(a[i]<a[index1]) index1=i;
		}

	for(k=0;k<n-1;k++){
		for(i=k+1;i<n;i++)
			if(a[i]>a[index2]) index2=i;
		}

	temp=a[index1];
	a[index1]=a[0];
	a[0]=temp;

	temp=a[index2];
	a[index2]=a[n-1];
	a[n-1]=temp;

	printf("After Sorted:\n");
	for (i=0;i<n;i++)
	{
		printf("%d  ",a[i]);
	}

}
9--------------------------
#include <stdio.h>
void main()
{
	int a[10],n,i,k,temp,index;

	printf("Input n:\n");
	scanf("%d",&n);

	printf("Input %d numbers:\n",n);
	for (i=0;i<n;i++)
	{
		scanf("%d",&a[i]);
	}

	for(k=0;k<n-1;k++){
		index=k;
		for(i=k+1;i<n;i++)
			if(a[i]>a[index])
				index=i;
			temp=a[index];
			a[index]=a[k];
			a[k]=temp;
	}

	printf("After Sorted:\n");
	for (i=0;i<n;i++)
	{
		printf("%d  ",a[i]);
	}

}
10--------------------------
#include <stdio.h>
void main()
{
	int i,j,n,sum=0;
	int a[6][6];

	printf("Input n:\n");
	scanf("%d",&n);

	printf("input %d numbers:\n",n*n);
	for (i=0;i<n;i++)
	{
		for (j=0;j<n;j++)
		{
			scanf("%d",&a[i][j]);
			sum=sum+a[i][j];
		}
	}

	for (i=0;i<n;i++)
	{
		sum=sum-a[i][n-1];
	}

	for (j=0;j<n;j++)
	{
		sum=sum-a[n-1][j];
		sum=sum-a[n-1-j][j];
	}

	sum=sum+a[n-1][0]+a[0][n-1]+a[n-1][n-1];

	printf("Sum=%d",sum);


}
11--------------------------
#include <stdio.h>
void main()
{
	int i,j,a[9][9],k=0;

	for (i=0;i<9;i++)
	{
		for (j=0;j<9;j++)
		{
			a[i][j]=(i+1)*(j+1);
		}
	}

	for (i=0;i<9;i++)
	{
		for (j=0;j<9;j++)
		{
			printf("%d*%d=%d  ",i+1,j+1,a[i][j]);
			k++;
			if (k%5==0)
			{
				printf("\n");
			}
		}
	}
}
12--------------------------
#include <stdio.h>
void main()
{
	int a[6][6],i,j,n,flag=1,k=1;

	printf("Input n:\n");
	scanf("%d",&n);

	printf("Input numbers:\n");
	for(i=0;i<n;i++){
		for (j=0;j<n;j++){
			scanf("%d",&a[i][j]);
		}
	}

	for (i=0;i<n;i++)
	{
		for (j=0;j<n;j++)
		{

			if (i>j&&a[i][j]!=0)
				flag=0;
				break;
			}
		if (flag==0)
			break;
	}
	
	if (flag)
		printf("Yes\n");
	else 	printf("No\n");

}
13--------------------------
#include <stdio.h>
void main()
{
	int a[6][6],i,j,n,m,sum[6];

	printf("Input m and n:\n");
	scanf("%d%d",&m,&n);

	printf("Input numbers:\n");
	for(i=0;i<m;i++){
		sum[i]=0;
		for (j=0;j<n;j++){
			scanf("%d",&a[i][j]);
			sum[i]=sum[i]+a[i][j];
		}
	}

	for (i=0;i<n;i++)
		printf("Sum of %d is: %d \n",i,sum[i]);
}
14--------------------------
15--------------------------
16--------------------------
17--------------------------
18--------------------------
19--------------------------
20--------------------------