For what purpose if -statement and if-else statements are used?

Question Bank (2 marks) · Q30

Q. For what purpose if -statement and if-else statements are used?

Karnataka PUCTextbookShort· 2mImportance★★★★★est

90% · 138/154 Questions

🔒 Locked · start free trial →

You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.

Start your 14-day free trial to unlock the full solution →

Concept understanding — Decision Control Statements (if, if-else and nested-if)

By default a C program runs its statements one after another, but decision (conditional) control statements let it choose between alternative paths depending on a condition. They are the basis of all decision-making programs.

if statement - executes a block only when its condition is true; if the condition is false the block is skipped.
```
if (condition)
    statement;
```
if-else statement - provides two alternatives: one block runs when the condition is true, the other when it is false.
```
if (condition)
    statement1;
else
    statement2;
```
Nested-if / else-if ladder - an if (or if-else) placed inside another, used to test several conditions in turn. This is how a program picks the largest of three numbers, or grades a value into ranges such as short, average and tall. …

Start your 14-day free trial to unlock the full solution →

[!TLDR]

if runs a block when a condition is true; if-else chooses between a true block and a false block.

Both statements make decisions based on a condition:

The if statement tests a condition and executes its block of statements only if the condition is true; if false, control simply skips to the next statement.
The if-else statement provides two blocks: the first runs when the condition is true and the second (the else block) runs when it is false, so exactly one of the two is always executed.

if (marks >= 35) …

Start your 14-day free trial to unlock the full solution →

←Previous questionQ29 — Mention different conditional control statement.→Next questionQ31 — Write the syntax of if- statement.

Q.For what purpose if -statement and if-else statements are used?

🎓Unlock everything free for 14 days

Unlock everything free for 14 days