- C for Loop Loops are used in programming to repeat a specific block of code. In this tutorial, you will learn to create a for loop in C programming (with examples). Loops are used in programming to repeat a specific block until some end condition is met.
- For loop in C programming with example: A loop is used in a programming to execute set of statements repeatedly until a given condition returns false.
- A loop statement allows us to execute a statement or group of statements multiple times. Given below is the general form of a loop statement in most of the programming languages − C programming language provides the following types of loops to handle looping requirements.
- /dev/loop. are loop devices making plain files accessible as block devices. They have nothing to do with RAM occupation. They are typically used for mounting disk images, in your case apparently for Ubuntu Snap. See this Wikipedia article for details.
A loop is used for executing a block of statements repeatedly until a given condition returns false.
In programming, loops are used to repeat a block of code. In this tutorial, you will learn to create for loop in C programming with the help of examples.
C For loop
This is one of the most frequently used loop in C programming.
Syntax of for loop:
Syntax of for loop:
Flow Diagram of For loop
Step 1: First initialization happens and the counter variable gets initialized.
Step 2: In the second step the condition is checked, where the counter variable is tested for the given condition, if the condition returns true then the C statements inside the body of for loop gets executed, if the condition returns false then the for loop gets terminated and the control comes out of the loop.
Step 3: After successful execution of statements inside the body of loop, the counter variable is incremented or decremented, depending on the operation (++ or –).
Example of For loop
Output:
Various forms of for loop in C
I am using variable num as the counter in all the following examples –
1) Here instead of num++, I’m using num=num+1 which is same as num++.
1) Here instead of num++, I’m using num=num+1 which is same as num++.
2) Initialization part can be skipped from loop as shown below, the counter variable is declared before the loop.
Note: Even though we can skip initialization part but semicolon (;) before condition is must, without which you will get compilation error.
3) Like initialization, you can also skip the increment part as we did below. In this case semicolon (;) is must after condition logic. In this case the increment or decrement part is done inside the loop.
3) Like initialization, you can also skip the increment part as we did below. In this case semicolon (;) is must after condition logic. In this case the increment or decrement part is done inside the loop.
4) This is also possible. The counter variable is initialized before the loop and incremented inside the loop.
Little snitch similar programs. 5) As mentioned above, the counter variable can be decremented as well. In the below example the variable gets decremented each time the loop runs until the condition num>10 returns false.
Nested For Loop in C
Nesting of loop is also possible. Lets take an example to understand this:
Output:
![C for loop C for loop](/uploads/1/2/6/1/126101779/634523187.jpg)
In the above example we have a for loop inside another for loop, this is called nesting of loops. https://sitechampion885.weebly.com/machine-learning-database-auto-tuning.html. One of the example where we use nested for loop is Two dimensional array.
Multiple initialization inside for Loop in C
We can have multiple initialization in the for loop as shown below.
What’s the difference between above for loop and a simple for loop?
1. It is initializing two variables. Note: both are separated by comma (,).
2. It has two test conditions joined together using AND (&&) logical operator. Note: You cannot use multiple test conditions separated by comma, you must use logical operator such as && or || to join conditions.
3. It has two variables in increment part. Note: Should be separated by comma.
1. It is initializing two variables. Note: both are separated by comma (,).
2. It has two test conditions joined together using AND (&&) logical operator. Note: You cannot use multiple test conditions separated by comma, you must use logical operator such as && or || to join conditions.
3. It has two variables in increment part. Note: Should be separated by comma.
Example of for loop with multiple test conditions
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You may encounter situations, when a block of code needs to be executed several number of times. In general, statements are executed sequentially: The first statement in a function is executed first, followed by the second, and so on.
Programming languages provide various control structures that allow for more complicated execution paths.
A loop statement allows us to execute a statement or group of statements multiple times. Given below is the general form of a loop statement in most of the programming languages −
C programming language provides the following types of loops to handle looping requirements.
Sr.No. | Loop Type & Description |
---|---|
1 | while loop Repeats a statement or group of statements while a given condition is true. It tests the condition before executing the loop body. |
2 | for loop Executes a sequence of statements multiple times and abbreviates the code that manages the loop variable. |
3 | do..while loop It is more like a while statement, except that it tests the condition at the end of the loop body. |
4 | nested loops You can use one or more loops inside any other while, for, or do.while loop. |
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Loop Control Statements
Loop control statements change execution from its normal sequence. When execution leaves a scope, all automatic objects that were created in that scope are destroyed.
C supports the following control statements.
Sr.No. | Control Statement & Description |
---|---|
1 | break statement Terminates the loop or switch statement and transfers execution to the statement immediately following the loop or switch. Best auto tune singers. |
2 | continue statement Causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating. |
3 | goto statement Transfers control to the labeled statement. |
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The Infinite Loop
Loops In Dev C++
A loop becomes an infinite loop if a condition never becomes false. The for loop is traditionally used for this purpose. Since none of the three expressions that form the 'for' loop are required, you can make an endless loop by leaving the conditional expression empty.
When the conditional expression is absent, it is assumed to be true. You may have an initialization and increment expression, but C programmers more commonly use the for(;;) construct to signify an infinite loop.
C++ 17 For Loop
NOTE − You can terminate an infinite loop by pressing Ctrl + C keys.