在机器语言的角度来看，本质都是 conditional jump. 细微的区别在于for循环和while循环会在 loop statement...
In this example, the program asks the user to enter numbers continuously until they enter 0. It keeps calculating the sum of the entered numbers. Once the user enters 0, the loop terminates, and the program prints the total sum. The loop is executed at least once because the condition is...
for vs while loops A for loop is usually used when the number of iterations is known. For example, // This loop is iterated 5 times for (int i = 1; i <=5; ++i) { // body of the loop } Here, we know that the for-loop will be executed 5 times. However, while and do.....
C 循环 不像for和while循环,它们是在循环头部测试循环条件。在 C 语言中,do...while循环是在循环的尾部检查它的条件。 do...while循环与 while 循环类似,但是 do...while 循环会确保至少执行一次循环。 语法 C 语言中do...while循环的语法: do{statement(s);}while(condition); 请注意,条件表达式出现在循...
C# while 循环 C# 循环 只要给定的条件为真,C# 中的 while 循环语句会重复执行一个目标语句。 语法 C# 中 while 循环的语法: while(condition) { statement(s); } 在这里,statement(s) 可以是一个单独的语句,也可以是几个语句组成的代码块。condition 可以是
Python中的用for,while循环 使用for循环遍历文件 打开文件 open r:以读模式打开 w:以写模式打开 a:以追加模式打开 r+:以读写模式打开 w+:以读写模式打开(参见w) a+:以读写模式打开(参见a)... Out[50]: '3333\n' In [51]: fd.readline() Out[51]: '' In [52]: read() 和readline()返回的...
Do…Loop循环 功能:当循环“条件”为真(While条件)或直到指定的循环结束“条件”(Until〈条件〉)为真之前重复执行“循环体”。 形式1: Do [While| Until〈条件〉] [〈循环体〉] [Exit Do] Loop 形式2: Do [〈循环体〉] [Exit Do] Loop [ ...
Now, there is another interesting difference between a for loop and a while loop. A for loop is faster than a while loop. To understand this you have to look into the example below. import timeit # A for loop example def for_loop(): for number in range(10000) : # Execute the below...
A loop is used for executing a block of statements repeatedly until a given condition returns false. In the previous tutorial we learned for loop. In this guide we will learn while loop in C. C - while loop Syntax of while loop: while (condition test) {
The while loop has the following syntax: While condition: expression(block of code) Unlike thefor loop, thewhile loopdoesn’t iterate over a sequence. It uses the comparison operators and booleans for its condition. Let’s look at some examples to better understand how it is used. ...