Loops in C++

📘 C++ 👁 59 views 📅 Dec 22, 2025

⏱ Estimated reading time: 2 min

A loop is used to execute a block of code repeatedly until a specified condition is met.

Types of Loops in C++

C++ provides three types of loops:

for loop
while loop
do–while loop

1. for Loop

Used when the number of iterations is known.

Syntax

for (initialization; condition; increment/decrement) {
    // statements
}

Example

for (int i = 1; i <= 5; i++) {
    cout << i>" ";
}

2. while Loop

Used when the number of iterations is not known in advance.

Syntax

while (condition) {
    // statements
}

Example

int i = 1;
while (i <= 5) {
    cout << i>" ";
    i++;
}

3. do–while Loop

Executes the loop body at least once, even if the condition is false.

Syntax

do {
    // statements
} while (condition);

Example

int i = 1;
do {
    cout << i>" ";
    i++;
} while (i <= 5);

Difference Between Loops

Feature	for	while	do–while
Condition check	Before loop	Before loop	After loop
Guaranteed execution	No	No	Yes
Best used when	Iterations known	Condition-based	At least one execution

Nested Loops

A loop inside another loop.

for (int i = 1; i <= 3; i++) {
    for (int j = 1; j <= 3; j++) {
        cout << "* ";
    }
    cout << endl>

Loop Control Statements

Statement	Purpose
`break`	Terminates the loop
`continue`	Skips current iteration

Key Points

Loops reduce code repetition
Choose the loop based on the problem
do–while runs at least once
Nested loops handle multi-level repetition

Conclusion

Loops are essential in C++ for performing repetitive tasks efficiently and logically.

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Loops in C++

⏱ Estimated reading time: 2 min

Types of Loops in C++

1. for Loop

Syntax

Example

2. while Loop

Syntax

Example

3. do–while Loop

Syntax

Example

Difference Between Loops

Nested Loops

Loop Control Statements

Key Points

Conclusion

Control Statements in C++

Functions in C++

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C++ Tutorials

Loops in C++

⏱ Estimated reading time: 2 min

Types of Loops in C++

1. for Loop

Syntax

Example

2. while Loop

Syntax

Example

3. do–while Loop

Syntax

Example

Difference Between Loops

Nested Loops

Loop Control Statements

Key Points

Conclusion

Control Statements in C++

Functions in C++

Share this Post

🚀 Want to Test Your Knowledge?

Popular Competitive Exam Quizzes

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