If-else Ladder in C

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Useful for if-else kind of conditional execution when we have more than two related conditional statements.

Syntax :

if(boolean_expression 1) {
   /* Executes when the boolean expression 1 is true */
}else if( boolean_expression 2) {
   /* Executes when the boolean expression 2 is true */
}else if( boolean_expression 3) {
   /* Executes when the boolean expression 3 is true */
} else  {
   /* executes when the none of the above condition is true. */
}               

Block Diagram :

Example:

WAP to give choice to user from menu to perform action.

#include
int main(){
  int x ;
  printf("MENU\n----------");
  printf("\n1. for Hello");
  printf("\n2. for Bye");
  printf("\n-----------");
  printf("\nEnter Your Choice: ");
  scanf("%d",&x);
 if(x==1) {
  printf("HELLO USER!!");
 }
 else if(x==2) {
   printf("BYE USER!!");
 }
 else {
   printf("INVALID CHOICE");
  }
 }             

OUTPUT:

MENU
-----------
1. for Hello
2. for Bye
-----------
Enter Your Choice: 3
INVALID CHOICE

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