In C++, a for loop is a control flow statement that allows you to repeatedly execute a block of code for a specific number of times or until a certain condition is met. It has a similar structure to other programming languages.
The syntax of a for loop in C++ is as follows:
for (initialization; condition; increment/decrement) {
// code to be executed
}
Let’s break down the different parts of the for loop:
- Initialization: It is typically used to initialize the loop control variable(s). This part is executed only once before the loop begins.
- Condition: It is an expression that is evaluated before each iteration of the loop. If the condition evaluates to
true, the loop body is executed. If it evaluates tofalse, the loop terminates, and the control moves to the next statement after the loop. - Increment/Decrement: It is used to update the loop control variable(s) after each iteration. It can be an increment (
++) or decrement (--) operation, but it can also be any other arithmetic or assignment operation. - Code to be executed: This is the block of code that is executed repeatedly as long as the condition is
true.
Here’s an example that demonstrates a simple for loop that prints the numbers 1 to 10:
#include <iostream>;
int main() {
for (int i = 1; i <= 10; i++) {
std::cout << i << " ";
}
return 0;
}
Output
1 2 3 4 5 6 7 8 9 10

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