C programming has three types of loops: for loop while loop do...while loop We will learn aboutforloop in this tutorial. In the next tutorial, we will learn aboutwhileanddo...whileloop. for Loop The syntax of theforloop is: for(initializationStatement; testExpression; updateStatement) {/...
C for 循环 C 循环for 循环允许您编写一个执行指定次数的循环控制结构。语法C 语言中 for 循环的语法:for ( init; condition; increment ) { statement(s); }下面是 for 循环的控制流:init 会首先被执行,且只会执行一次。这一步允许您声明并初始化任何循环控制变量。您也可以不在这里写任何语句,只要有一个...
#define loopBy(var, n) for(int var = 0; var != n; var++) 试试遍历 x*y 的二维阵列: #define x 3 #define y 4 int array2d[x][y] = { 0 }; loopBy(i, x){ // for(int i = 0; i != x; i++) loopBy(j, y){ // for(int j = 0; j != x ; j++) printf("%d"...
increment counter : Increasing the loop counter value. execute the statement : Execute C statements. Note : The for-loop must have two semi-colons between the opening and closing parenthesis. The following picture has clearly described the for loop syntax. Why For Loops? 1. " For" loops exec...
If the condition is true, the loop will start over again, if it is false, the loop will end.Expression 3 increases a value (i++) each time the code block in the loop has been executed.Exercise? What is the main use of a for loop in C? To execute a block of code indefinitely ...
) { string str("some string"); // range for 语句 for(auto &c : str) { c = toupp...
C For Loop - Learn how to use the for loop in C programming with examples and detailed explanations.
range-for是C++ 11新增特性,用于循环迭代一个“范围”,该“范围”类似于包含有begin()和end()方法的STL序列容器。所有的STL标准容器都适用于该“范围”,例如vector、string等等。数组也同样可以,只要定义了begin()和end()方法的任何“范围”都可以使用for来循环迭代容器里面的元素,如istream。
A loop is used for executing a block of statements repeatedly until a given condition returns false. C For loop This is one of the most frequently used loop in C programming. Syntax of for loop: for (initialization; condition test; increment or decrement
所谓循环(Loop),就是重复地执行同一段代码,例如要计算 1+2+3+……+99+100 的值,就要重复进行 99 次加法运算。 C语言while循环 while 循环的一般形式为: while(表达式){ 语句块 } 意思是,先计算“表达式”的值,当值为真(非 0)时, 执行“语句块”;执行完“语句块”,再次计算表达式的值,如果为真,继续...