If Statement is simply a set of operations that could be used to compare expressions. These generally have two values of LHS and RHS. This operator compares the expression of the left-hand side and right-hand side. In comparison, it simply returns a Boolean value.

The general syntax of If Statement in C is,

// sets of instruction that needs to be executed

The if statement is used to check some given condition and perform some operations depending upon the correctness of that condition. It is mostly used in the scenario where we need to perform the different operations for the different conditions. The syntax of the if statement is given below.

These are different types of If Statements. Let us explain in-depth with syntax.

// sets of instruction which needs to be executed

// sets of instruction which needs to be executed for if-block

// sets of instruction which needs to be executed for else-if block

// sets of instruction which needs to be executed for else block

In this section, each block is evaluated, and the code is executed as per the evaluation.

if( varNumValue < 10 ) { // checks the condition

printf("if statement instructions");  // sets of instructions which needs to be executed

char favoritePlaceToVisit[] = "New York";

if (favoritePlaceToVisit ==  "New York") { // checks the condition

printf(" Your favorite place to visit is New York ");  // sets of instructions which needs to be executed for if block

printf("Your favorite place is different city");  // sets of instructions which needs to be executed for else block

Now, let us initialize the variable favoritePlaceToVisit with a value say “Vegas” so that else block gets executed.

if( enterNumberOfCarsYouHave == 1 ) { // checks the condition

printf("You have one car");  // sets of instructions which needs to be executed for if block

else if( enterNumberOfCarsYouHave == 2 ) { // checks the condition

printf("You have two cars");  // sets of instructions which needs to be executed for if else block

else if( enterNumberOfCarsYouHave == 3 ) { // checks the condition

printf("You have three cars");  // sets of instructions which needs to be executed for if else block

else if( enterNumberOfCarsYouHave == 4 ) { // checks the condition

printf("You have four cars");  // sets of instructions which needs to be executed for if else block

else if( enterNumberOfCarsYouHave == 5 ) { // checks the condition

printf("You have five cars");  // sets of instructions which needs to be executed for if else block

else if( enterNumberOfCarsYouHave == 6 ) { // checks the condition

printf("You have six cars");  // sets of instructions which needs to be executed for if else block

else if( enterNumberOfCarsYouHave == 7 ) { // checks the condition

printf("You have seven cars");  // sets of instructions which needs to be executed for if else block

else if( enterNumberOfCarsYouHave == 8 ) { // checks the condition

printf("You have eight cars");  // sets of instructions which needs to be executed for if else block

else if( enterNumberOfCarsYouHave == 9 ) { // checks the condition

printf("You have nine cars");  // sets of instructions which needs to be executed for if else block

printf("You have more than 10 cars");  // sets of instructions which needs to be executed for else block

Let's discuss the if, if-else statements in C.

 About If Statement in C

The if-else statement is used to perform two operations for a single condition. The if-else statement is an extension to the if statement using which, we can perform two different operations, i.e., one is for the correctness of that condition, and the other is for the incorrectness of the condition. Here, we must notice that if and else block cannot be executed simultaneously. Using an if-else statement is always preferable since it always invokes an otherwise case with every if condition. 

//code to be executed if condition is true  

//code to be executed if condition is false  

Let’s take an example of a Boolean expression with the help of actual coding in C: If the condition is met (true) as per the given logical expression, then the program will print the statements under ‘if’ and if the condition is not met (false) then the program will print the statements which are under ‘else’ and below the ‘if-else.’

To check whether a number is greater or less than a specific number:

int a = 10; /* local variable definition */

if( a > 5 ) /* check the boolean condition */

printf("Yes, a is greater than 5" ); /* if the condition is true then print this */

printf("No, a is less than 5" ); /* if the condition is false then print this */

To check which one is the greater among the 3 numbers:

if(a > c){printf("a is the greatest among the three"); }

else{printf("c is the greatest among the three");}

if(b > c){printf("b is the greatest among the three");}

To check if an input number is divisible by 2 or 3:

printf("The entered number is divisible by both 2 and 3");

printf("The entered number is divisible by 2");

printf("The entered number is divisible by 3");

The purpose of this blog post is to teach you how to write if else statements in C and to provide examples of them.

if else statement

Trending Blogposts on if else statement

About If Statement in C

Discussion of the if else statement in C, as well as its flowchart and examples

Popular Discussions on if else statement

PRODUCTS

QUICK LINKS

LEGAL

if else statement

Trending Blogposts on if else statement

About If Statement in C

Discussion of the if else statement in C, as well as its flowchart and examples

Popular Discussions on if else statement