C program

 

Structure of C

Include header file section

Global declaration section

Main()

{

Declaration part

Executable Part

}

User-define function

{

Statements

}

C library while Making Program

#include<conio.h>

#include<stdio.h>

==>Program to print “Hello”

#include<conio.h>

#include<stdio.h>

Void main()

{

Clrscr();

Printf(“Hello…”);

Getch();

}

Output: Hello

 ==>Program for addition, subtraction, multiplication, division and  modulo.

          #include<conio.h>

#include<stdio.h>

void main()

{

int i,j;

clrscr();

printf("Enter Value of i:");

scanf(“%d",&i);

printf("Enter the Value of j:");

scanf("%d",&j);

printf("%d+%d=%d\n",i,j,i+j);

printf("%d-%d=%d\n",i,j,i-j);

printf("%d*%d=%d\n",i,j,i*j);

printf("%d/%d=%d\n",i,j,i/j);

printf("%d%%%d=%d\n",i,j,i%j);

getch();

}

==>Program to find a sum of first N odd numbers. 

#include<conio.h>

#include<stdio.h>

void main()

{

int n,i,j=1,sum=0;

clrscr();

printf("Enter a number");

scanf("%d",&n);

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

{

sum=sum+j;

j=j+2;

}

printf("Sum of odd number %d",sum);

getch();

}

Output:

Enter a Number: 5

Sum of odd Number: 25

==>Program For Swapping two Values

#include<stdio.h>
#include<conio.h>
void exch(int*,int*);
void main()
{
    int a,b;
    clrscr();
    printf("Enter value1:");
    scanf("%d",&a);
    printf("Enter value2:");
    scanf("%d",&b);
    exch(&a,&b);
    printf("value after exchang:\n");
    printf("value1=%d \nvalue2=%d",a,b);
    getch();
}
void exch(int*a,int*b)
{
    int temp;
    temp=*a;
    *a=*b;
    *b=temp;
}

==>Program for Student information with using Array

#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
    struct student
    {
        char name[50],branch[50];
        int eno;
    }s;
    clrscr();
    printf("Enter student information\n");
    printf("Enter name:");
    gets(s.name);
    printf("Enter enrollment No:");
    scanf("%d",&s.eno);
    printf("Enter branch:");
    scanf("%s",s.branch);
    printf("\n-----------------------\n");
    printf("Name:");
    puts(s.name);
    printf("Eno.:%d",s.eno);
    printf("\nBranch:");
    puts(s.branch);
    getch();
}