int my_array[5] = {1, 2, 3, 4, 5}; // 每个数组元素乘于 2 for (int &x : my_array) { x *= 2; cout << x << endl; } // auto 类型也是 C++11 新标准中的，用来自动获取变量的类型 for (auto &x : my_array) { x *= 2; cout << x << endl;
Working of ranged for loop in C++ Example 1: Ranged for Loop Using Array #include<iostream>usingnamespacestd;intmain(){// initialize arrayintnumArray[] = {1,2,3,4,5};// use of ranged for loop to print array elementsfor(intn : numArray) {cout<< n <<" "; }return0; } ...
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 loop_i(n) for(int i = 0; i != n; i++) #define loop_j(n) for(int j = 0; j != n; j++) #define loop_k(n) for(int k = 0; k != n; k++) 再试试遍历 x*y 的二维阵列: #define x 3 #define y 4 int array2d[x][y] = { 0 }; loop_i(x){ // for(i...
C for LoopIn programming, a loop is used to repeat a block of code until the specified condition is met. C programming has three types of loops: for loop while loop do...while loop We will learn about for loop in this tutorial. In the next tutorial, we will learn about while and ...
numVal = 0; int numArray[] = {0}; cout << "Enter the number of values to average: "; cin >> numVal; //Loop through to accept all values and allocate them to an array for (int i = 0; i < numVal; i++) { cout << "[" << i << "] = "; cin >> numArray[i]; ...
for...of语句在可迭代对象(包括 Array,Map,Set,String,TypedArray,arguments 对象等等)上创建一个迭代循环,调用自定义迭代钩子,并为每个不同属性的值执行语句。 代码语言:txt AI代码解释 const array = ['a', 'b', 'c']; for (const element of array) { ...
for(inti=0;;){longi=1;// valid C, invalid C++// ...} Keywords for Example Run this code #include <iostream>#include <vector>intmain(){std::cout<<"1) typical loop with a single statement as the body:\n";for(inti=0;i<10;++i)std::cout<<i<<' ';std::cout<<"\n\n""2)...
JavaScript中有多种循环Array的方式,你是否常常分不清他们的细微差别,和适用场景。本文将详细梳理各间的优缺点,整理成表以便对比。 示例地址 for (ES1) 这个循环方式历史悠久,从ECMAScript 1就被支持。 constarr = ['a','b','c']; arr.prop='property value';for(letindex=0; index < arr.length; index...
C for loop : A for Loop is used to repeat a specific block of code (statements) a known number of times. The for-loop statement is a very specialized while loop, which increase the readability of a program. Here we have discussed syntax, description and