C basic programing by Amarjeet kumar singh

How to Print Hello world programe in C

#include<stdio.h>

#include<conio.h>

void main()     /*code will start execution from main */

{

clrscr();     

printf("Hello world");

getch();

}

How to add two numbers in C to taking input from the users

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,sum;  

clrscr();

printf("enter first number:");

scanf("%d",&a);

printf("enter second number:");

scanf("%d",&b);

sum=a+b;

printf("your sum is=%d",sum);

getch();

}

How to print table in c using for Loop

#include<stdio.h>

#include<conio.h>

void main()

{

inta,b;

clrscr();

printf("enter the number :");

scanf("%d",&a);

for(b=1;b<=10;b++)

{

printf(%d*%d=%d\n",a,b,a*b);

}

getch();

}

C program to swap two numbers 

#include<stdio.h>
#include<conio.h>
void main()
{
    int a,b,temp;
    printf("enter the two numbers:");
    scanf("%d%d",&a,&b);
    temp=a;
    a=b;
    b=temp;
    printf("a=%d b=%d",a,b);
    getch();
}

How to print area of circle and circumference in C

#include<stdio.h>
#include<conio.h>

void main()
 {

   int rad;
   float PI = 3.14, area, ci;

   printf("\nEnter radius of circle: ");
   scanf("%d", &rad);

   area = PI * rad * rad;
   printf("\nArea of circle : %f ", area);

   ci = 2 * PI * rad;
   printf("\nCircumference : %f ", ci);

   getch();
}

To learn more programing and practice in C language follow this blog thanks have a nice day to all of you.