How to use while in c language

While loop is used to repeatedly execute a block of code while a conditional expression is true. Syntax: while (condition) { // Loop body}. It continues executing the code contained within the loop body until the condition is false.

Usage of while loop in C language

while Loop is a kind of A control structure in C that is used to repeatedly execute a block of code so that the loop continues executing while its conditional expression is true.

Syntax:

<code class="c">while (condition) {
  // 要重复执行的代码
}</code>

Usage:

1. ##Conditional expression:

   The conditional expression is a Boolean expression that determines whether the loop continues to execute.
   • If the conditional expression is true, execute the loop body; if it is false, exit the loop.

2. Loop body:

   A loop body is a block of code that contains code to be executed repeatedly.
   • Every time the conditional expression is true, the loop body will be executed once.

Example:

<code class="c">int main() {
  int i = 1;
  while (i <= 10) {
    printf("%d ", i);
    i++;
  }
  return 0;
}</code>

Note:

Ensure that the conditional expression will eventually become false to prevent the loop from executing infinitely.
• Modify the conditional expression in the loop body to control the execution of the loop.
• Use the break statement to exit from the loop.

The above is the detailed content of How to use while in c language. For more information, please follow other related articles on the PHP Chinese website!