C if statement

Syntax :

if(expression)
   statement1;

Explanation :

• Expression is Boolean Expression
• It may have true or false value

Meaning of If Statement :

• It Checks whether the given Expression is Boolean or not !!
• If Expression is True Then it executes the statement otherwise jumps to next_instruction

Sample Program Code :

void main()
{
int a=5,b=6,c;
  c = a + b ;
  if (c==11)
       printf("Execute me 1");
  printf("Execute me 2");
}

Output :

Execute me 1

If Statement :

if(conditional)
{
    Statement No 1
    Statement No 2
    Statement No 3
    . 
    .
    .
    Statement No N
}

Note :

1. More than One Conditions can be Written inside If statement.
2. Opening and Closing Braces are required only when “Code” after if statement occupies multiple lines.

if(conditional)
    Statement No 1
Statement No 2
Statement No 3

In the above example only Statement 1 is a part of if Statement.

1. Code will be executed if condition statement is True.
2. Non-Zero Number Inside if means “TRUE Condition”

if(100)
    printf("True Condition");

Program flow of If Statement :