In this program user is asked to enter the age and based on the input, the if..else statement checks whether the entered age is greater than or equal to 18. The boolean-expression will return either true or false. If you want to execute multiple statements for the else condition, enclose the code in curly brackets. Decision Making in C/C++ helps to write decision driven statements and execute a particular set of code based on certain conditions.. if-else-if ladder in C/C++. { Here, a user can decide among multiple options. printf("dig3 is the maximum"); Nested else-if is used when multipath decisions are required. The flow of execution goes in a way that condition 1 will get tested if it becomes false then, statement 3 will get executed. return 0; Sometimes, we need to use an if statement inside another if statement. { Try to change the value of n and check what it returns.. C++ if…else statement : if…else adds one more block called else … } printf("dig1 is the maximum"); #include 4. } With the above-illustrated programs, it can be very well analyzed that nested if statement plays a very critical role when it comes to condition satisfaction with the scenarios involving all the critical decision-making statements with assertions and manipulations being involved. if (g1 > g2) }. Verify False statements of 2nd condition; If condition returns false then the statements inside the body of “if” are skipped and the statements in “else” are executed. There can be any number of else..if statement in a if else..if block. int main() { I've tried putting the second 'else if' first but that was unsuccessful and also by putting 'b == 0' before 'a ==0' with the same problem. { Nested if statement in C plays a very pivotal role in making a check on the inner nested statement of if statement with an else very carefully. Sitemap. If any logical condition is true the compiler executes the block under that else if condition, otherwise, it skips and executes else block. { THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. The general syntax of how else-if ladders are constructed in 'C' programming is as follows: This type of structure is known as the else-if ladder. printf("dig3 is the maximum"); In this control structure we have only one “if” and one “else”, however we can have multiple “else … C - nested if statements - It is always legal in C programming to nest if-else statements, which means you can use one if or else if statement inside another if or else if statement(s). However, if the time was 14, our program would print "Good day." int g1, g2; } } else When using if , else if , else statements there are few points to keep in mind. else { else C Tutorials C Programs C Practice Tests New . if it gets true then it will go for the next execution of test condition 2. scanf("%d",&a); Output: c is largest if-else if Ladder. This is Part 4. Conditional code flow is the ability to change the way a piece of code behaves based on certain conditions. Nested if else statement in c In this kind of statements number of logical conditions are checked for executing various statenents. © 2020 - EDUCBA. } if ( a < 18 ) By Chaitanya Singh | Filed Under: c-programming. printf("Consider as minor \n"); Program to find the greatest digit from three digits by making certain permutation and combination with nested if and then getting an output with the three largest among all. Control statement like if can be easily nested within another nested if statement besides the fact that if outer statement gets failed then the compiler will skip the entire block irrespective of any other inner statement condition. This chain generally looks like a ladder hence it is also called as an else-if ladder. We will rewrite the same program using else..if statements. In this Nested If program, User can enter his age, and we are going to store it in the variable age. else Syntax: printf("Age is not satisfactory according to the organization norms\n"); printf("Get value for g1:"); scanf("%d",&g2); Lets take the same example that we have seen above while discussing nested if..else. } } printf("g1 is equal to g2\n"); } else And final nested if or else to check for the true condition. A conclusion can be easily made that nesting if statement to perform is fine but when it comes to deal with the false statement once it enters the else part and control needs to be executed and set to a true value then nested if it comes as a savior. When using if , else if , else statements there are few points to keep in mind. Now, you are requested to share how to apply ‘and’ condition. 5. { int main() Moreover, any organization will offer a job if he or she is above 18 years otherwise no job is guaranteed it means the condition then and there becomes false. Syntax of Nested if else statement: The else..if statement is useful when you need to check multiple conditions within the program, nesting of if-else blocks can be avoided using else..if statement. printf("Ready for retirement and can collect pension \n"); C Nested if-else Statements - Nested if-else statements in C programming plays an important role, it means you can use conditional statements inside another conditional statement. As soon as one of the conditions controlling the if is true, the statement associated with that if is executed, and the rest of the C else-if ladder is bypassed. Syntax { Verify False statements of 1st condition; } As you can see that only the statements inside the body of “if” are executed. C Nested else if Statement. C++ Nested if...else. This is known as nested if statement. C programming language assumes any non-zero and non-null values as true, and if it is either zero or null, then it is assumed as false value. Every person is eligible for working once he or she is above 18 years otherwise not eligible. ALL RIGHTS RESERVED. Start Your Free Software Development Course, Web development, programming languages, Software testing & others, if ( check 1st condition) printf(" Enter your current Age Here:\n"); } 1. else and else..if are optional statements, a program having only “if” statement would run fine. Once an else if succeeds, none of he remaining else if's or else's will be tested. An if can have zero or one else's and it must come after any else if's. int main() We go into detail on the “if” statement.This includes the statements else, else if, and nesting if-else statements. In short, it can be written as if () {}. if-else & if would achieve the same results but if-else achieves them in a performance enhanced way. Javac will check for the first condition. Verify True statements of 2nd condition; if (x > y) { if(dig1 > dig3) If none of the conditions are met then the statements in else block gets executed. Think of it as multiple layers of if statements. The if statement is a decision-making statement that allows taking decisions based upon the condition specified. If condition returns true then the statements inside the body of “if” are executed and the statements inside body of “else” are skipped. Once an else if succeeds, none of he remaining else if's or else's will be tested. scanf("%d", &g1); An if can have zero to many else if's and they must come before the else. printf("He/She is successfully eligible for Working \n"); if (a >= 18 && a <= 50 ) } } The if statements are executed from the top down. Nested if-else statement. int dig1, dig2, dig3; } C else-if Statements - else-if statements in C is like another if condition, it's used in a program when if statement having multiple decisions. #include If the condition result is TRUE, then the statements present in that block will run. scanf("%d%d%d", &dig1, &dig2, &dig3); Once an else statement gets failed there are times when the next execution of statement wants to return a true statement, there we need nesting of if statement to make the entire flow of code in a semantic order. Else If Statement in C … int a; }. Important Points: Program to take certain numbers as input from the user and then calculating from those numbers the largest and then giving the result whether or not it is greater or equal after manipulation with nested if statement. { { Introduction on Else if Statement in C. Else if the statement is a control statement in C language. Both the then-statement and the else-statement can consist of a single statement or multiple statements that are enclosed in braces ({}). Please refer to C If Else Statement and C IF Statement articles. { Here is a longer examination of the basic ifst… If this condition meet then display message “You are eligible for voting”, however if the condition doesn’t meet then display a different message “You are not eligible for voting”. return 0; } Nested if statement in C is the nesting of if statement within another if statement and nesting of if statement with an else statement. }. printf("g1 is larger than g2\n"); With if-else only one conditional check will have to be performed and the rest of the conditions just don't need to be checked at all. { 2. else and else..if cannot be used without the “if”. printf("x is larger than y and z "); There is a first, outer if statement, and inside it is another, inner if statement. In such situations you can use if statements.. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy, 3 Online Courses | 5 Hands-on Projects | 34+ Hours | Verifiable Certificate of Completion | Lifetime Access, C++ Training (4 Courses, 5 Projects, 4 Quizzes), Java Training (40 Courses, 29 Projects, 4 Quizzes), Software Development Course - All in One Bundle. In the example above, time (22) is greater than 10, so the first condition is false.The next condition, in the else if statement, is also false, so we move on to the else condition since condition1 and condition2 is both false - and print to the screen "Good evening". Below are the example of Nested if Statement in C: Program for analysis of people of certain age groups who are eligible for getting a suitable job if their condition and norms get satisfied using nested if statement. The if statement is also known as a decision making statement, as it makes a decision on the basis of a given condition or expression. In this guide, we will learn how to use if else, nested if else and else if statements in a C Program. { { 3. This is because in this statement as soon as a condition is satisfied, the statements inside that block are executed and rest of the blocks are ignored. Since its value is 10, it prints the line that is printed by the cout statement.. In case the statement with condition 2 gets false or unsatisfied then it will execute else with statement 2 in consideration. Programming. C# if-then statement will execute a block of code if the given condition is true. In an if statement that doesn’t include an else statement, if condition is true, the then-statement runs. Your email address will not be published. Else if the statement is quite similar to an if-else statement. If the Boolean expression evaluates to true, then the if block will be executed, otherwise, the else block will be executed. printf("Enter three numbers: "); C If else statement. The C if statements are executed from the top down. This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. If the condition 1 gets satisfied i.e. printf("Not fit for Working"); else Syntax of if else statement: If condition returns true then the statements inside the body of “if” are executed and the statements inside body of “else” are skipped. In case it do not satisfies to be true it will go to else section to verify for the second condition of false statement. int main() else if(dig1 > dig2) The following NestedIf program shows an example of a nested if statement in use. if(dig2 > dig3) Required fields are marked *, Copyright © 2012 – 2021 BeginnersBook . Flow Diagram Example. For example the above program can be rewritten like this: When an if else statement is present inside the body of another “if” or “else” then this is called nested if else. Here, a user can decide among multiple options. How the flow of the syntax of the nested if statement works is like if statement will check for the first condition then if it gets satisfied with a true value then it will check for the 2nd condition. 3. if (x > z) { Let’s take an example and understand. An if can have zero or one else's and it must come after any else if's. This working of nested if the statement is done in a way that when an if the condition gets true and other statements can go for a false condition but then it presumes that it has to become true and satisfactory for the other statement with the second condition then there will be need of Nested if statement.