Loops in C Programming

Loops are used when you need to repeat a part of the program. In C, we have loops; through which we can repeat a part of the program until a condition is satisfied. In this lesson, we will learn how to work with loops in C Programming.

Here are the loops,

  • while loop
  • do-while loop
  • for loop

while loop

The while loop in C language is used when you want to repeat a part of the program a fixed number of times. This is specified as a condition.

For example, marks of students with more than 75 in Maths.

Syntax

The following is the syntax of the while loop in C Language,

The following is an example showing the usage of the while loop in C Language,

The following is the output,

Loops in C Programming

do-while loop

The do-while is the same as while, but the do-while executes the statement first and then the condition is tested.

Syntax

The following is the syntax of using the do-while loop in C Language,

The following is an example showing the usage of the do-while loop in C Language,

The following is the output showing the usage of the do-while loop in C Language,

C Programming do-while loop

for Loop

The for loop is a loop that executes a specified number of times. Under this, initialize, test, and increment loop counter in a single line, unlike the while and do-while loop.

Syntax

The syntax of for loop shows the usage of the loop counter, its initialization, as well as condition,

The following is an example showing the usage of for loop in C language,

The output shows the value of i iterated five times with for loop,

C Programming for loop

Loop Control Statements

Repeatedly execute a block of code using the loop control statements. The following are the loop control statements in C Language:

  • break statement
  • continue statement

break Statement

Use the break statement, if you want to jump out of a loop. The control passes to the first statement after the loop, since the break statement terminates the loop.

The syntax for break statement:

Example

The following is an example showing the usage of the break statement in C language,

The following is the output showing the usage of the break statement in C Language,

C Programming break statement

continue statement

Use the continue statement, if you want to pass control to the next iteration of the loop. However, it skips any code in between.

The syntax for continue statement in C language,

The following is an example showing the usage of the continue statement,

The following is the output,

C Programming continue statement

In this lesson, we learned how to work with loops in C Language. We saw the implementation of the while loop, do-while loop, for loop, break statement, and continue statement.

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