structure pointer

 

structure pointer

 

 

#include<stdio.h>

struct self_ref{

int a;

struct self_ref *next;

};

void print_all(struct self_ref  pr)

{

   if (pr.a==0)

    {

        return ;

    }

//    printf("%d ",pr.a);

    print_all(*pr.next);

    printf("%d ",pr.a);

}

int main()

{

        struct self_ref var1,var2,var3,var4;

        var1.a = 5;

        var1.next = &var2;

        var2.a = 6;

        var2.next = &var3;

        var3.a = 7;

        var3.next = &var4;

        var4.a = 0;

    print_all(var1);

}

structure function

#include<stdio.h>

struct my{

int x;

float y;

};

void print (struct my pr)

{

    printf("x = %d\n",pr.x);

    printf("y = %f\n",pr.y);

}

struct my add(struct my a,struct my b)

{

    struct my result;

    result.x = a.x+b.x;

    result.y = a.y+b.y;

    return result;

};

int main()

{

    struct my mem,mem1,sum;

    mem.x=5;

    mem.y=6.6;

    mem1=mem;

    print(mem);

    print(mem1);

    sum = add(mem,mem1);

    printf("sum\n");

    print(sum);

}

structure pointer

#include<stdio.h>

#include<string.h>

struct structure

{

    char name [12];

    int value;

};

void swap (struct structure *a,struct structure *b )

{

    struct structure temp;

    strcpy(temp.name,a->name);

    temp.value=a->value;

    strcpy(a->name,b->name);

    a->value=b->value;

    strcpy(b->name,temp.name);

    b->value=temp.value;

}

int main()

{

    struct structure val1,val2;

    printf("Enter the val 1 and value :");

    scanf("%s%d",val1.name,&val2.value);

    printf("Enter the val 2 and value :");

    scanf("%s%d",val2.name,&val2.value);

    if(val2.value>val1.value)

        swap(&val2,&val1);

printf("val1 (%d) %s\n",val1.value,val1.name);

printf("val2 (%d) %s\n",val2.value,val2.name);

return 0;

}

Nexted structure

Nexted structure

 

#include<stdio.h>

struct birthday

    {

        int day;

        int month;

        int year;

    };

      struct Sex

    {

        int male;

        int female;

    };

struct student

{

    char first_name[50];

    char last_name[50];

    struct birthday birth;

    struct Sex sex ;

};

struct teacher

{

    char first_name[50];

    char last_name[50];

    char birthday birth;

    char Sex sex;

    int salary;

};

int main()

{

    struct student user;

    printf("ENter First Name :   ");

    scanf("%s",user.first_name);

    printf("ENter Last Name  :   ");

    scanf("%s",user.last_name);

    printf("\nENter Your Birth info :  ");

    printf("\n\t DAY  :  ");

     scanf("%d",&user.birth.day);

    printf("\t MONTH  :  ");

    scanf("%d",&user.birth.month);

    printf("\t Year  :  ");

    scanf("%d",&user.birth.year);

    y:

    printf("Enter Your Sex ; m/M=Male F=Female :  \n");

    scanf("%s",sexck);

    if(strcmp(sexck,"M")==0||strcmp(sexck,"m")==0)

        {

            user.sex.male=1;

            user.sex.female=0;

        }

    else if(strcmp(sexck,"F")==0||strcmp(sexck,"f")==0)

    {

            user.sex.male=0;

            user.sex.female=1;

    }

    else

    {

        printf("\nYou have dial Wrong keyword\n");

        goto y;

        return 0;

    }

    printf(" \nYOUR information is HERE \n");

printf("FIRST name:%s\n",user.first_name);

printf("Last name:%s\n",user.last_name);

printf("User name:%s\n",user.username);

printf("password:%s\n",user.password);

printf("User birthday:%d\n",user.birth.day);

printf("User birthmonth:%d\n",user.birth.month);

printf("User birthyear%d\n",user.birth.year);

printf("SEX : ");

if(user.sex.male==1)

{

    printf("Male\n");

}

else

{

    printf("Female\n");

}

return 0;

}

C প্রোগ্রামিং - 12 অধ্যায়–Structure () with hide password example

 

#include<stdio.h>

struct creat_account

{

    char first_name[50];

    char last_name[50];

    char username[50];

    char password[51];

    struct birthday

    {

        int day;

        int month;

        int year;

    }birth;

    struct Sex

    {

        int male;

        int female;

    }sex;

};

void pass_gen(char pass[])

{

    int i=0;

    char ch;

    while(1)

    {

        ch=getch();

        if(ch==13)

        {

            break;

        }

        else

        putchar('*');

            pass[i++]=ch;

    }

    pass[i]='\0';

}

int main()

{

    char passck[20];

    char sexck[10];

    struct creat_account user;

    printf("ENter First Name :   ");

    scanf("%s",user.first_name);

    printf("ENter Last Name  :   ");

scanf("%s",user.last_name);

    printf("ENter your User Name  :   ");

    scanf("%s",user.username);

z:

    printf("ENter your pasword :   ");

    pass_gen(user.password);

    printf("\nENter repeat your password  : ");

    pass_gen(passck);

    if(strcmp(user.password,passck)!=0)

    {

        printf("\nDon't Match\n");

        goto z;

    }

    printf("\nENter Your Birth info :  ");

    printf("\n\t DAY  :  ");

     scanf("%d",&user.birth.day);

    printf("\t MONTH  :  ");

    scanf("%d",&user.birth.month);

    printf("\t Year  :  ");

    scanf("%d",&user.birth.year);

    y:

    printf("Enter Your Sex ; m/M=Male F=Female :  \n");

    scanf("%s",sexck);

    if(strcmp(sexck,"M")==0||strcmp(sexck,"m")==0)

        {

            user.sex.male=1;

            user.sex.female=0;

        }

    else if(strcmp(sexck,"F")==0||strcmp(sexck,"f")==0)

    {

            user.sex.male=0;

            user.sex.female=1;

    }

    else

    {

        printf("\nYou have dial Wrong keyword\n");

        goto y;

        return 0;

    }

    printf(" \nYOUR information is HERE \n");

printf("FIRST name:%s\n",user.first_name);

printf("Last name:%s\n",user.last_name);

printf("User name:%s\n",user.username);

printf("password:%s\n",user.password);

printf("User birthday:%d\n",user.birth.day);

printf("User birthmonth:%d\n",user.birth.month);

printf("User birthyear%d\n",user.birth.year);

printf("SEX : ");

if(user.sex.male==1)

{

    printf("Male\n");

}

else

{

    printf("Female\n");

}

return 0;

}