The do-while statement lets you repeat a statement or compound statement until a specified expression becomes false. Syntax iteration-statement: do statement while ( expression ) ; The expression in a do-while statement is evaluated after the body of the loop is executed. Therefore, the body ...
–awk Do while循环称为退出控制循环,而 awk while 循环称为入口控制循环。因为 while 循环首先检查条件,然后决定是否执行主体。但是awk do while循环执行一次主体,然后只要条件为真就重复执行主体。 Syntax:doactionwhile(condition) 即使条件为假,在开始时至少执行一次操作。 2. awk Do While 循环示例:至少打印一次...
The syntax for ado whilestatement is: doloop_body_statementwhile(cond_exp); where: loop_body_statementis any valid C statement or block. cond_expis an expression that is evaluated at the end of each pass through the loop. If the value of the expression is "false" (i.e., compares equ...
do-while 循环是一种后测试循环(also known as exit-controlled loop):首先执行循环体中的语句,之后才评估循环的继续条件。与之对比的是 for 和 while 循环,它们都是先测试循环条件,然后再执行循环体,称为前测试循环(pre-tested loop)。在实际编程中,根据具体需求选择最合适的循环类型非常重要。 二、SYNTAX AND ...
C programming has three types of loops. for loop while loop do...while loop In the previous tutorial, we learned about for loop. In this tutorial, we will learn about while and do..while loop. while loop The syntax of the while loop is: while (testExpression) { // the body of the...
A do-while loop inside another loop is referred to as a nested do-while loop in C++. Note here the inner loop executes multiple times for each iteration of the outer loop. Syntax: In C++, a nested do-while loop has the following basic structure: do {// Outer loop code blockdo {//...
Syntax do{ // code block to be executed } while(condition); Note:The semicolon;after thewhilecondition is required! Do/While Example The example below uses ado/whileloop. The loop will always be executed at least once, even if the condition is false, because the code block is executed ...
while loop do...while loop In the previous tutorial, we learned about the C++ for loop. Here, we are going to learn about while and do...while loops. C++ while Loop The syntax of the while loop is: while (condition) { // body of the loop } Here, A while loop evaluates the con...
The operations controlled by the DOW operation are performed while the expression in indicator-expression is true. See Expressions for details on expressions. For information on how operation extenders M and R are used, see Precision Rules for Numeric Operations. For fixed-format syntax, level and...
do...while loop in C It is an exit-controlled loop. It prints the output at least once before checking the condition. Afterwards, the condition is checked and the execution of the loop begins. do...while loop Flowchart Syntax do{//code to be executed}while(test condition); ...