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"Loops are the backbone of automation in programming, reducing code redundancy and improving efficiency."

What Are Loops?

Loops allow us to execute a block of code multiple times until a certain condition is met. C supports three types of loops:

Types of Loops in C

1. for Loop

The for loop is used when the number of iterations is known beforehand.

#include <stdio.h>

int main() {
for (int i = 1; i <= 5; i++) {
	printf("Iteration %d\n", i);
}
return 0;
}

2. while Loop

The while loop is used when the number of iterations is not known in advance.

#include <stdio.h>

int main() {
int i = 1;
while (i <= 5) {
	printf("Iteration %d\n", i);
	i++;
}
return 0;
}

3. do-while Loop

The do-while loop ensures that the code runs at least once before checking the condition.

#include <stdio.h>

int main() {
int i = 1;
do {
	printf("Iteration %d\n", i);
	i++;
} while (i <= 5);
return 0;
}

Loop Control Statements

Loop control statements alter the flow of a loop:

• break: Terminates the loop immediately.
• continue: Skips the current iteration and moves to the next.

Example: Using break

#include <stdio.h>

int main() {
for (int i = 1; i <= 10; i++) {
	if (i == 5) {
		break; // Exit loop when i equals 5
	}
	printf("Iteration %d\n", i);
}
return 0;
}

Example: Using continue

#include <stdio.h>

int main() {
for (int i = 1; i <= 5; i++) {
	if (i == 3) {
		continue; // Skip iteration when i equals 3
	}
	printf("Iteration %d\n", i);
}
return 0;
}

Comparison of Loops

Best Practices for Using Loops

• Use for loops when the number of iterations is known.
• Use while loops when the number of iterations depends on a condition.
• Use do-while loops when the loop must run at least once.
• Avoid infinite loops by ensuring loop conditions change.
• Use break and continue wisely to control loop execution.

Conclusion

Loops are essential for automating repetitive tasks in C programming. Understanding different loop types helps in writing efficient and clean code! 🚀

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