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  • 趣味c语言编程100例(四)

    Technorati 标签: 趣味,c语言,编程,100例

    经典c程序100例==81--90

    【程序81】
    题目:809*??=800*??+9*??+1 其中??代表的两位数,8*??的结果为两位数,9*??的结果为3位数。求??代表的两位数,及809*??后的结果。
    1.程序分析:
    2.程序源代码:
    output(long b,long i)
    { printf("\n%ld/%ld=809*%ld+%ld",b,i,i,b%i);
    }
    main()
    {long int a,b,i;
    a=809;
    for(i=10;i<100;i++)
    {b=i*a+1;
    if(b>=1000&&b<=10000&&8*i<100&&9*i>=100)
    output(b,i); }
    }
    ==============================================================
    【程序82】
    题目:八进制转换为十进制
    1.程序分析:           
    2.程序源代码:
    main()
    { char *p,s[6];int n;
    p=s;
    gets(p);
    n=0;
    while(*(p)!='\0')
    {n=n*8+*p-'0';
    p++;}
    printf("%d",n);
    }
    ==============================================================
    【程序83】
    题目:求0—7所能组成的奇数个数。
    1.程序分析:
    2.程序源代码:
    main()
    {
    long sum=4,s=4;
    int j;
    for(j=2;j<=8;j++)/*j is place of number*/
    { printf("\n%ld",sum);
    if(j<=2)
    s*=7;
    else
    s*=8;
    sum+=s;}
    printf("\nsum=%ld",sum);
    }
    ==============================================================
    【程序84】
    题目:一个偶数总能表示为两个素数之和。
    1.程序分析:
    2.程序源代码:
    #include "stdio.h"
    #include "math.h"
    main()
    { int a,b,c,d;
    scanf("%d",&a);
    for(b=3;b<=a/2;b+=2)
    { for(c=2;c<=sqrt(b);c++)
    if(b%c==0) break;
    if(c>sqrt(b))
    d=a-b;
    else
    break;
    for(c=2;c<=sqrt(d);c++)
    if(d%c==0) break;
    if(c>sqrt(d))
    printf("%d=%d+%d\n",a,b,d);
    }
    }
    ==============================================================
    【程序85】
    题目:判断一个素数能被几个9整除
    1.程序分析:
    2.程序源代码:
    main()
    { long int m9=9,sum=9;
    int zi,n1=1,c9=1;
    scanf("%d",&zi);
    while(n1!=0)
    { if(!(sum%zi))
    n1=0;
    else
    {m9=m9*10;
    sum=sum+m9;
    c9++;
    }
    }
    printf("%ld,can be divided by %d \"9\"",sum,c9);
    }
    ==============================================================
    【程序86】
    题目:两个字符串连接程序
    1.程序分析:
    2.程序源代码:
    #include "stdio.h"
    main()
    {char a[]="acegikm";
    char b[]="bdfhjlnpq";
    char c[80],*p;
    int i=0,j=0,k=0;
    while(a[i]!='\0'&&b[j]!='\0')
    {if (a[i]<B[J])
    { c[k]=a[i];i++;}
    else
    c[k]=b[j++];
    k++;
    }
    c[k]='\0';
    if(a[i]=='\0')
    p=b+j;
    else
    p=a+i;
    strcat(c,p);
    puts(c);
    }
    ==============================================================
    【程序87】
    题目:回答结果(结构体变量传递)
    1.程序分析:     
    2.程序源代码:
    #include "stdio.h"
    struct student
    { int x;
    char c;
    } a;
    main()
    {a.x=3;
    a.c='a';
    f(a);
    printf("%d,%c",a.x,a.c);
    }
    f(struct student b)
    {
    b.x=20;
    b.c='y';
    }
    ==============================================================
    【程序88】
    题目:读取7个数(1—50)的整数值,每读取一个值,程序打印出该值个数的*。
    1.程序分析:
    2.程序源代码:
    main()
    {int i,a,n=1;
    while(n<=7)
    { do {
       scanf("%d",&a);
       }while(a<1||a>50);
    for(i=1;i<=a;i++)
     printf("*");
    printf("\n");
    n++;}
    getch();
    }
    ==============================================================
    【程序89】
    题目:某个公司采用公用电话传递数据,数据是四位的整数,在传递过程中是加密的,加密规则如下:
       每位数字都加上5,然后用和除以10的余数代替该数字,再将第一位和第四位交换,第二位和第三位交换。
    1.程序分析:
    2.程序源代码:
    main()
    {int a,i,aa[4],t;
    scanf("%d",&a);
    aa[0]=a%10;
    aa[1]=a%100/10;
    aa[2]=a%1000/100;
    aa[3]=a/1000;
    for(i=0;i<=3;i++)
     {aa[i]+=5;
     aa[i]%=10;
     }
    for(i=0;i<=3/2;i++)
     {t=aa[i];
     aa[i]=aa[3-i];
     aa[3-i]=t;
     }
    for(i=3;i>=0;i--)
    printf("%d",aa[i]);
    }
    ==============================================================
    【程序90】
    题目:专升本一题,读结果。
    1.程序分析:
    2.程序源代码:
    #include "stdio.h"
    #define M 5
    main()
    {int a[M]={1,2,3,4,5};
    int i,j,t;
    i=0;j=M-1;
    while(i<J)
    {t=*(a+i);
    *(a+i)=*(a+j);
    *(a+j)=t;
    i++;j--;
    }
    for(i=0;i<M;I++)
    printf("%d",*(a+i));
    }

    经典c程序100例==91--100

    【程序91】
    题目:时间函数举例1
    1.程序分析:
    2.程序源代码:
    #include "stdio.h"
    #include "time.h"
    void main()
    { time_t lt; /*define a longint time varible*/
    lt=time(NULL);/*system time and date*/
    printf(ctime(<)); /*english format output*/
    printf(asctime(localtime(<)));/*tranfer to tm*/
    printf(asctime(gmtime(<))); /*tranfer to Greenwich time*/
    }
    ==============================================================
    【程序92】
    题目:时间函数举例2
    1.程序分析:           
    2.程序源代码:
    /*calculate time*/
    #include "time.h"
    #include "stdio.h"
    main()
    { time_t start,end;
    int i;
    start=time(NULL);
    for(i=0;i<3000;i++)
    { printf("\1\1\1\1\1\1\1\1\1\1\n");}
    end=time(NULL);
    printf("\1: The different is %6.3f\n",difftime(end,start));
    }
    ==============================================================
    【程序93】
    题目:时间函数举例3
    1.程序分析:
    2.程序源代码:
    /*calculate time*/
    #include "time.h"
    #include "stdio.h"
    main()
    { clock_t start,end;
    int i;
    double var;
    start=clock();
    for(i=0;i<10000;i++)
    { printf("\1\1\1\1\1\1\1\1\1\1\n");}
    end=clock();
    printf("\1: The different is %6.3f\n",(double)(end-start));
    }
    ==============================================================
    【程序94】
    题目:时间函数举例4,一个猜数游戏,判断一个人反应快慢。(版主初学时编的)
    1.程序分析:
    2.程序源代码:
    #include "time.h"
    #include "stdlib.h"
    #include "stdio.h"
    main()
    {char c;
    clock_t start,end;
    time_t a,b;
    double var;
    int i,guess;
    srand(time(NULL));
    printf("do you want to play it.('y' or 'n') \n");
    loop:
    while((c=getchar())=='y')
    {
    i=rand()%100;
    printf("\nplease input number you guess:\n");
    start=clock();
    a=time(NULL);
    scanf("%d",&guess);
    while(guess!=i)
    {if(guess>i)
    {printf("please input a little smaller.\n");
    scanf("%d",&guess);}
    else
    {printf("please input a little bigger.\n");
    scanf("%d",&guess);}
    }
    end=clock();
    b=time(NULL);
    printf("\1: It took you %6.3f seconds\n",var=(double)(end-start)/18.2);
    printf("\1: it took you %6.3f seconds\n\n",difftime(b,a));
    if(var<15)
    printf("\1\1 You are very clever! \1\1\n\n");
    else if(var<25)
    printf("\1\1 you are normal! \1\1\n\n");
    else
    printf("\1\1 you are stupid! \1\1\n\n");
    printf("\1\1 Congradulations \1\1\n\n");
    printf("The number you guess is %d",i);
    }
    printf("\ndo you want to try it again?(\"yy\".or.\"n\")\n");
    if((c=getch())=='y')
    goto loop;
    }
    ==============================================================
    【程序95】
    题目:家庭财务管理小程序
    1.程序分析:
    2.程序源代码:
    /*money management system*/
    #include "stdio.h"
    #include "dos.h"
    main()
    {
    FILE *fp;
    struct date d;
    float sum,chm=0.0;
    int len,i,j=0;
    int c;
    char ch[4]="",ch1[16]="",chtime[12]="",chshop[16],chmoney[8];
    pp: clrscr();
    sum=0.0;
    gotoxy(1,1);printf("|---------------------------------------------------------------------------|");
    gotoxy(1,2);printf("| money management system(C1.0) 2000.03 |");
    gotoxy(1,3);printf("|---------------------------------------------------------------------------|");
    gotoxy(1,4);printf("| -- money records -- | -- today cost list -- |");
    gotoxy(1,5);printf("| ------------------------ |-------------------------------------|");
    gotoxy(1,6);printf("| date: -------------- | |");
    gotoxy(1,7);printf("| | | | |");
    gotoxy(1,8);printf("| -------------- | |");
    gotoxy(1,9);printf("| thgs: ------------------ | |");
    gotoxy(1,10);printf("| | | | |");
    gotoxy(1,11);printf("| ------------------ | |");
    gotoxy(1,12);printf("| cost: ---------- | |");
    gotoxy(1,13);printf("| | | | |");
    gotoxy(1,14);printf("| ---------- | |");
    gotoxy(1,15);printf("| | |");
    gotoxy(1,16);printf("| | |");
    gotoxy(1,17);printf("| | |");
    gotoxy(1,18);printf("| | |");
    gotoxy(1,19);printf("| | |");
    gotoxy(1,20);printf("| | |");
    gotoxy(1,21);printf("| | |");
    gotoxy(1,22);printf("| | |");
    gotoxy(1,23);printf("|---------------------------------------------------------------------------|");
    i=0;
    getdate(&d);
    sprintf(chtime,"%4d.%02d.%02d",d.da_year,d.da_mon,d.da_day);
    for(;;)
    {
    gotoxy(3,24);printf(" Tab __browse cost list Esc __quit");
    gotoxy(13,10);printf(" ");
    gotoxy(13,13);printf(" ");
    gotoxy(13,7);printf("%s",chtime);
    j=18;
    ch[0]=getch();
    if(ch[0]==27)
    break;
    strcpy(chshop,"");
    strcpy(chmoney,"");
    if(ch[0]==9)
    {
    mm:i=0;
    fp=fopen("home.dat","r+");
    gotoxy(3,24);printf(" ");
    gotoxy(6,4);printf(" list records ");
    gotoxy(1,5);printf("|-------------------------------------|");
    gotoxy(41,4);printf(" ");
    gotoxy(41,5);printf(" |");
    while(fscanf(fp,"%10s%14s%f\n",chtime,chshop,&chm)!=EOF)
    { if(i==36)
    { getch();
    i=0;}
    if ((i%36)<17)
    { gotoxy(4,6+i);
    printf(" ");
    gotoxy(4,6+i);}
    else
    if((i%36)>16)
    { gotoxy(41,4+i-17);
    printf(" ");
    gotoxy(42,4+i-17);}
    i++;
    sum=sum+chm;
    printf("%10s %-14s %6.1f\n",chtime,chshop,chm);}
    gotoxy(1,23);printf("|---------------------------------------------------------------------------|");
    gotoxy(1,24);printf("| |");
    gotoxy(1,25);printf("|---------------------------------------------------------------------------|");
    gotoxy(10,24);printf("total is %8.1f$",sum);
    fclose(fp);
    gotoxy(49,24);printf("press any key to.....");getch();goto pp;
    }
    else
    {
    while(ch[0]!='\r')
    { if(j<10)
    { strncat(chtime,ch,1);
    j++;}
    if(ch[0]==8)
    {
    len=strlen(chtime)-1;
    if(j>15)
    { len=len+1; j=11;}
    strcpy(ch1,"");
    j=j-2;
    strncat(ch1,chtime,len);
    strcpy(chtime,"");
    strncat(chtime,ch1,len-1);
    gotoxy(13,7);printf(" ");}
    gotoxy(13,7);printf("%s",chtime);ch[0]=getch();
    if(ch[0]==9)
    goto mm;
    if(ch[0]==27)
    exit(1);
    }
    gotoxy(3,24);printf(" ");
    gotoxy(13,10);
    j=0;
    ch[0]=getch();
    while(ch[0]!='\r')
    { if (j<14)
    { strncat(chshop,ch,1);
    j++;}
    if(ch[0]==8)
    { len=strlen(chshop)-1;
    strcpy(ch1,"");
    j=j-2;
    strncat(ch1,chshop,len);
    strcpy(chshop,"");
    strncat(chshop,ch1,len-1);
    gotoxy(13,10);printf(" ");}
    gotoxy(13,10);printf("%s",chshop);ch[0]=getch();}
    gotoxy(13,13);
    j=0;
    ch[0]=getch();
    while(ch[0]!='\r')
    { if (j<6)
    { strncat(chmoney,ch,1);
    j++;}
    if(ch[0]==8)
    { len=strlen(chmoney)-1;
    strcpy(ch1,"");
    j=j-2;
    strncat(ch1,chmoney,len);
    strcpy(chmoney,"");
    strncat(chmoney,ch1,len-1);
    gotoxy(13,13);printf(" ");}
    gotoxy(13,13);printf("%s",chmoney);ch[0]=getch();}
    if((strlen(chshop)==0)||(strlen(chmoney)==0))
    continue;
    if((fp=fopen("home.dat","a+"))!=NULL);
    fprintf(fp,"%10s%14s%6s",chtime,chshop,chmoney);
    fputc('\n',fp);
    fclose(fp);
    i++;
    gotoxy(41,5+i);
    printf("%10s %-14s %-6s",chtime,chshop,chmoney);
    }}}
    ==============================================================
    【程序96】
    题目:计算字符串中子串出现的次数
    1.程序分析:
    2.程序源代码:
    #include "string.h"
    #include "stdio.h"
    main()
    { char str1[20],str2[20],*p1,*p2;
    int sum=0;
    printf("please input two strings\n");
    scanf("%s%s",str1,str2);
    p1=str1;p2=str2;
    while(*p1!='\0')
    {
    if(*p1==*p2)
    {while(*p1==*p2&&*p2!='\0')
    {p1++;
    p2++;}
    }
    else
    p1++;
    if(*p2=='\0')
    sum++;
    p2=str2;
    }
    printf("%d",sum);
    getch();}
    ==============================================================
    【程序97】
    题目:从键盘输入一些字符,逐个把它们送到磁盘上去,直到输入一个#为止。
    1.程序分析:     
    2.程序源代码:
    #include "stdio.h"
    main()
    { FILE *fp;
    char ch,filename[10];
    scanf("%s",filename);
    if((fp=fopen(filename,"w"))==NULL)
    {printf("cannot open file\n");
    exit(0);}
    ch=getchar();
    ch=getchar();
    while(ch!='#')
    {fputc(ch,fp);putchar(ch);
    ch=getchar();
    }
    fclose(fp);
    }
    ==============================================================
    【程序98】
    题目:从键盘输入一个字符串,将小写字母全部转换成大写字母,然后输出到一个磁盘文件“test”中保存。
       输入的字符串以!结束。
    1.程序分析:
    2.程序源代码:
    #include "stdio.h"
    main()
    {FILE *fp;
    char str[100],filename[10];
    int i=0;
    if((fp=fopen("test","w"))==NULL)
    { printf("cannot open the file\n");
    exit(0);}
    printf("please input a string:\n");
    gets(str);
    while(str[i]!='!')
    { if(str[i]>='a'&&str[i]<='z')
    str[i]=str[i]-32;
    fputc(str[i],fp);
    i++;}
    fclose(fp);
    fp=fopen("test","r");
    fgets(str,strlen(str)+1,fp);
    printf("%s\n",str);
    fclose(fp);
    }
    ==============================================================
    【程序99】
    题目:有两个磁盘文件A和B,各存放一行字母,要求把这两个文件中的信息合并(按字母顺序排列),
       输出到一个新文件C中。
    1.程序分析:
    2.程序源代码:
    #include "stdio.h"
    main()
    { FILE *fp;
    int i,j,n,ni;
    char c[160],t,ch;
    if((fp=fopen("A","r"))==NULL)
    {printf("file A cannot be opened\n");
    exit(0);}
    printf("\n A contents are :\n");
    for(i=0;(ch=fgetc(fp))!=EOF;i++)
    {c[i]=ch;
    putchar(c[i]);
    }
    fclose(fp);
    ni=i;
    if((fp=fopen("B","r"))==NULL)
    {printf("file B cannot be opened\n");
    exit(0);}
    printf("\n B contents are :\n");
    for(i=0;(ch=fgetc(fp))!=EOF;i++)
    {c[i]=ch;
    putchar(c[i]);
    }
    fclose(fp);
    n=i;
    for(i=0;i<n;i++)
    for(j=i+1;j<n;j++)
    if(c[i]>c[j])
    {t=c[i];c[i]=c[j];c[j]=t;}
    printf("\n C file is:\n");
    fp=fopen("C","w");
    for(i=0;i<n;i++)
    { putc(c[i],fp);
    putchar(c[i]);
    }
    fclose(fp);
    }
    ==============================================================
    【程序100】
    题目:有五个学生,每个学生有3门课的成绩,从键盘输入以上数据(包括学生号,姓名,三门课成绩),计算出
       平均成绩,况原有的数据和计算出的平均分数存放在磁盘文件"stud"中。
    1.程序分析:
    2.程序源代码:
    #include "stdio.h"
    struct student
    { char num[6];
    char name[8];
    int score[3];
    float avr;
    } stu[5];
    main()
    {int i,j,sum;
    FILE *fp;
    /*input*/
    for(i=0;i<5;i++)
    { printf("\n please input No. %d score:\n",i);
    printf("stuNo:");
    scanf("%s",stu[i].num);
    printf("name:");
    scanf("%s",stu[i].name);
    sum=0;
    for(j=0;j<3;j++)
    { printf("score %d.",j+1);
    scanf("%d",&stu[i].score[j]);
    sum+=stu[i].score[j];
    }
    stu[i].avr=sum/3.0;
    }
    fp=fopen("stud","w");
    for(i=0;i<5;i++)
    if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
    printf("file write error\n");
    fclose(fp);
    }

    转到:趣味c语言编程100例(一) 

    转到:趣味c语言编程100例(二)

    转到:趣味c语言编程100例(三)

    转自:http://hi.baidu.com/yiyubingfeng/blog/item/3ecbb5388c1615c3d4622548.html

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  • 原文地址:https://www.cnblogs.com/emanlee/p/1393417.html
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