C প্রোগ্রামিং - 12 অধ্যায়–Structure (কিছু : example) part 2

Namesort / ID sort / CGPA sort

 

 

normal :input output

#include<stdio.h>

#include<string.h>

struct cse12

{

    char name[20];

    int sid;

    double cgpa ;

}student;

int main()

{

   // struct cse12 student ;

    strcpy(student.name,"sharif");

    student.sid=1;

    student.cgpa=3.00;

    printf("student name :%s\n",student.name);

    printf("student ID :%d\n",student.sid);

    printf("student CGPA :%lf\n",student.cgpa);

    return 0;

}

using arrary

#include<stdio.h>

#include<string.h>

struct cse12

{

    char name[20];

    int sid;

    double cgpa ;

} student[10];

void print(struct cse12 student[])

{

    int i;

    for(i=0; i<10; i++)

    {

        printf("student name :%s\n",student[i].name);

        printf("student ID :%d\n",student[i].sid);

        printf("student CGPA :%lf\n",student[i].cgpa);

    }

}

int main()

{

    int i;

    //struct cse12 ;

    for(i=0; i<10; i++)

    {

        scanf("%s\n",student[i].name);

        scanf("%d\n",&student[i].sid);

        scanf("%lf\n",&student[i].cgpa);

    }

    print(student);

    return 0;

}

Namesort / ID sort // Cgpa sort

#include<stdio.h>

#include<string.h>

struct cse12

{

    char name[20];

    int sid;

    double cgpa ;

} student[10];

//...........................................

input(struct cse12 student[])

{

    int i;

    printf("Enter 5 student info:\n");

    for(i=0; i<5; i++)

    {

        scanf("%s\n",student[i].name);

        scanf("%d\n",&student[i].sid);

        scanf("%lf\n",&student[i].cgpa);

    }

}

//..........................................

void output(struct cse12 student[])

{

    int i;

    for(i=0; i<5; i++)

    {

        printf("student ID :%d\n",student[i].sid);

        printf("student name :%s\n",student[i].name);

        printf("student CGPA :%.2lf\n",student[i].cgpa);

    }

}

//.........................................

void namesort(struct cse12 student[])

{

    int i,j;

    for(i=0; i<4; i++)

    {

        for(j=i+1; j<5; j++)

        {

            if(strcmp(student[i].name,student[j].name)>0)

            {

                struct cse12 temp;

                strcpy(temp.name,student[i].name);

                temp.sid=student[i].sid;

                temp.cgpa=student[i].cgpa;

                strcpy(student[i].name,student[j].name);

                student[i].sid=student[j].sid;

                student[i].cgpa=student[j].cgpa;

                strcpy(student[j].name,temp.name);

                student[j].sid=temp.sid;

                student[j].cgpa=temp.cgpa;

            }

        }

    }

}

//...........................................

void idsort(struct cse12 student[])

{

    int i,j;

    for(i=0; i<4; i++)

    {

        for(j=i+1; j<5; j++)

        {

            if(student[i].sid>student[j].sid)

            {

                struct cse12 temp;

                strcpy(temp.name,student[i].name);

                temp.sid=student[i].sid;

                temp.cgpa=student[i].cgpa;

                strcpy(student[i].name,student[j].name);

                student[i].sid=student[j].sid;

                student[i].cgpa=student[j].cgpa;

                strcpy(student[j].name,temp.name);

                student[j].sid=temp.sid;

                student[j].cgpa=temp.cgpa;

            }

        }

    }

}

//.........................................

void cgpasort(struct cse12 student[])

{

    int i,j;

    for(i=0; i<4; i++)

    {

        for(j=i+1; j<5; j++)

        {

            if(student[i].cgpa>student[j].cgpa)

            {

                struct cse12 temp;

                strcpy(temp.name,student[i].name);

                temp.sid=student[i].sid;

                temp.cgpa=student[i].cgpa;

                strcpy(student[i].name,student[j].name);

                student[i].sid=student[j].sid;

                student[i].cgpa=student[j].cgpa;

                strcpy(student[j].name,temp.name);

                student[j].sid=temp.sid;

                student[j].cgpa=temp.cgpa;

            }

        }

    }

}

//..........................................

int main()

{

    input(student);

    output(student);

    //namesort(student);

      //idsort(student);

    cgpasort(student);

    printf("\n\nAfter sorting :");

    output(student);

    return 0;

}

Numeric :Gauss Seidel

 

Gauss Seidel

 

#include<stdio.h>

int main()

{

    double a[50],b[50],c[50],X1,X2,X3,eax1,eax2,eax3,p,q,r;

    int i,n=4;

   // freopen("input.txt","r",stdin);

//printf("Enter length :");

//scanf("%d",&n);

//............................

printf("Enter 1st equation :");

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

{

scanf("%lf",&a[i]);

}

//..........................

printf("Enter 2nd equation :");

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

{

scanf("%lf",&b[i]);

}

//...........................

printf("Enter 3rd equation :");

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

{

scanf("%lf",&c[i]);

}

printf("ENter the value of X1 :");

scanf("%lf",&X1);

printf("ENter the value of X2 :");

scanf("%lf",&X2);

printf("ENter the value of X3 :");

scanf("%lf",&X3);

//...........................

X1=p;

X2=q;

X3=r;

X1=((a[3]-(a[2]*X2)-(a[1]*X3))/a[0]);

printf("X1 is %lf\n",X1);

X2=((b[3]-(b[2]*X3)-(b[0]*X1))/b[1]);

printf("X2 is %lf\n",X2);

X3=((c[3]-(c[1]*X2)-(c[0]*X1))/c[2]);

printf("X2 is %lf\n",X3);

//...........................

eax1=(((X1-p)/X1)*100);

eax2=(((X2-q)/X2)*100);

eax3=(((X3-r)/X3)*100);

printf("eax1=%.1lf\n",eax1);

printf("eax2=%.1lf\n",eax2);

printf("eax3=%.1lf\n",eax3);

return 0;

}