作業貼—隨便粘在這

 1.費波序列問題 

#include "stdafx.h"
int Pheponatch(int n);
int main(int argc, char* argv[])
{     
	int n;
	printf("輸入n的值：");
    scanf("%d", &n);
	printf("%d\n",Pheponatch(n));
	return 0;
}

int Pheponatch(int n)
{  
	unsigned int result,result_1,result_2;
    result_1=1;
	result_2=1;
	if(n<=2)
	{
		result=1;
	}
    for(int i=3;i<=n;++i)
	{
         result=result_1+result_2;
         
         result_1=result_2;	   //此處注意先給result_1 賦值 
		 result_2=result;
      
	}
	return result;
}

 

2.輸入6個整數，求其中偶數的平均值和奇數的累加和

#include "stdafx.h"
int main(int argc, char* argv[])
{     
	int n[6];
	printf("輸入6個n的值：");
    scanf("%d%d%d%d%d%d", &n[0], &n[1], &n[2], &n[3], &n[4], &n[5]);
	int  EvenSum=0,OddSum=0;
	 int j=0; //標記偶數個數
    for(int i=0;i<6;i++)
	{
		if(0==(n[i]%2))
		{
          j++;
		  EvenSum+=n[i];
		}
		else
		{
          OddSum+=n[i];
		}
	}
	printf("偶數平局數：%d\n奇數和:%d \n",EvenSum/j,OddSum);
	return 0;
}

 

3.txt讀取

#include "stdafx.h"
#include<stdio.h>
void main() 
{
	FILE *fp,*fp1;
    int cap=0, i=1;
    char mid,filename[10];
    printf("Input the filename like *.txt!\n");
    scanf("%s",filename);
    if((fp=fopen(filename,"r"))==NULL)
	{
		printf("Can not open the file!\n");
	}
    if((fp1=fopen("stdout.txt","w+"))==NULL)
	{
		printf("Can not open the file!\n");
	}
    while(!feof(fp))
	{   
      mid=fgetc(fp);
      if(mid=='\n') cap++;   
	}
    fclose(fp);
    if((fp=fopen(filename,"r"))==NULL)
	{
		printf("Can not open the file!\n");
	}
    fprintf(fp1,"%d ",i++);
    while(!feof(fp))
	{   
      if(fputc(fgetc(fp),fp1)=='\n')
      fprintf(fp1,"%d ",i++);
	} 
    printf("cap=%d \n",cap+1);
    fclose(fp);
    fclose(fp1);
} 

 4打印

*
*.*.
*..*..*..
*...*...*...*...
*....*....*....*....*....
*.....*.....*.....*.....*.....*.....
*......*......*......*......*......*......*......

#include "stdafx.h"
void  show(int n);
int main(int argc, char* argv[])
{     
	show(10);
	getchar();
	return 0;
}
void show(int n)
{

	int i,j,k;
	for(k=1;k<=n;k++)
	{
		for(i=0;i<k-1;i++)
		{
			printf("*");
			for(j=0;j<k-2;j++)
			{
			printf(".");
			}
			
		}
		printf("\n");
	}


}

5寫一個函數，將其中的\t都轉換成4個空格。

#include "stdafx.h"
#include<stdio.h>
#include<string.h>
#define MAXLEN 100
void TabToSpace(char *str,int len)
{
 int i=0,j;
 while(str[i]!='\0')
 {
  if(str[i]=='\t')
  {
   for(j=len+3;j-3>i;j--)
   {
    str[j] = str[j-3];
   }
   str[i++] = '.';
   str[i++] = '.';
   str[i++] = '.';
   str[i++] = '.';
   len = len +3;//這兒不要忘了哦，這樣移動後實際上你的字符串的長度已經增加了
  }
  else i++;
 }
 
} 

int main()
{
 char a[MAXLEN]="ab\tcd\t123\tasc111111";
 int len=strlen(a);
 TabToSpace(a,len);
 printf("%s\n",a);
 return 0;
}

 MFC  只允許程序運行一個實例

		// 此程序只能運行一次，用互斥量來判斷程序是否已運行
    HANDLE m_hMutex=CreateMutex(NULL,TRUE, m_pszAppName); 

    if(GetLastError()==ERROR_ALREADY_EXISTS) 
	{ 
		AfxMessageBox("程序正在運行",MB_OK,0);
		return FALSE;
	}