C – Compound Statement admin 2017-08-05T14:46:51+00:00

Compound Statements :

A compound statement (also called a “block”) typically appears as the body of another statement, such as the if statement, for statement, while statement, etc
It consists of several individual statements enclosed within a pair of braces { }. The individual statements may themselves be expression statements, compound statements or control statements. Unlike expression statements, a compound statements does not end with a semicolon. A typical Compound statements is given below.

{

pi=3.14;

area=pi*radius*radius;

}

The particular compound statement consists of two assignment-type expression statements.

Accessibility of variables inside and outside of compound statement :

A variable which is declared above (outside) the compound statements, it is accessible both inside and outside the compound statements.
A variable which is declared inside the compound statements it is not accessible outside the compound statements.
It is possible to declare a variable with the same name both inside and outside the compound statements.

C – COMPOUND STATEMENT EXAMPLE PROGRAM :

#include<stdio.h>
#include<conio.h>
int main()
{
float  pi, area, radius;
clrscr();
printf(“Enter radius of Circle”);
scanf(“%f”,&radius);
{
pi = 3.14;
area = pi*radius*radius;
}
printf(“Area of circle= %f”, area);
getch();
return 0;
}

#include<stdio.h>

#include<conio.h>

int main()

{

float pi, area, radius;

clrscr();

printf(“Enter radius of Circle”);

scanf(“%f”,&radius);

{

pi = 3.14;

area = pi*radius*radius;

}

printf(“Area of circle= %f”, area);

getch();

return 0;

}

Output :

Enter radius of circle

Area of the circle = 28.26

#include<stdio.h>
#include<conio.h>
void main()
{
  int a=100;
  clrscr();
  printf("Outside Compound Statement\n");
  printf("a=%d\n\n",a);
  {
    int a=200;
    printf("Inside Compound Statement\n");
    printf("a=%d\n\n",a);
  }
  printf("Outside Compound Statement\n");
  printf("a=%d\n",a);
  getch();
}