Conditional Statements

Conditional Statements in C :

1. if statement
2. if-else statement
3. if-else-ladder statement

if statement :

The if statement allows you to specify a block of code to be executed if a certain condition is true.

Syntax :

if (condition)
{
  // block of code to be executed if the condition is true
}

Example :

#include <stdio.h>

int main() {

    int a=5;

    if(a==5)
    {
        printf("Both are Equal");
    }

    return 0;
}

Output :

Both are Equal

Example:

#include <stdio.h>

int main() {

    int a=5;

    if(a==5)
    {
        printf("Both are Equal");
    }

    printf("\n This is a normal Line");

    return 0;
}

Output :

Both are Equal
This is a normal Line

Example:

#include <stdio.h>

int main() {

    int a=10;

    if(a%2==0)
    {
        printf("Given number is Even ");
    }

    return 0;
}

Output :

Given number is Even

if-else statement

The if-else statement allows you to specify two blocks of code: one to be executed if a condition is true, and another to be executed if the condition is false.

Syntax :

if (condition)
{
  //block of code to be executed the condition is true;
}

else
{

  //block of code to be executed the condition is false;

}

Example: WAP to find out your age is eligible for voting or not.

#include <stdio.h>

int main() {

    int age;

    printf("Enter your age :");
    scanf("%d",&age);

    if(age>=18)
    {
        printf("Your are eligible for voting ");
    }

    else
    {
        printf("Your are not eligible for voting");
    }
    return 0;
}

Output :

Enter your age :18
Your are eligible for voting

if-else-ladder statement

The if-else-ladder checks conditions in a sequential manner. If the first condition gets true it will not check further conditions. If none of the condition gets true it will run the else block.

syntax

   if (condition)
   {
    // Statement
   }
   else if (condition)
   {
    // Statement
   }
   else if (condition)
   {
    // Statement
   }
   else{

   }

Example :

#include <stdio.h>

int main() {
    int number;

    printf("Enter a number: ");
    scanf("%d", &number);

    if (number > 0) {
        printf("The number is positive.\n");
    } else if (number < 0) {
        printf("The number is negative.\n");
    } else {
        printf("The number is zero.\n");
    }

    return 0;
}

Output :

Enter a number: 12
The number is positive.