如果你喜欢，也可以将 then 和 if 写在一行：ifcondition;thenstatement(s)fi请注意 condition 后边的分号;，当 if 和 then 位于同一行的时候，这个分号是必须的，否则会有语法错误。#!/bin/bashreadareadbif[$a==$b]thenecho"a和b相等"fiif else语句如果有两个分支，就可以使用
if condition then # 执行的命令或脚本块 elif condition then # 另一个条件下的命令或脚本块 else # 如果所有条件都不满足时执行的命令或脚本块 fi 优势 灵活性:可以根据不同的条件执行不同的操作。 自动化:通过脚本自动化决策过程,减少手动干预。 可读性:结构清晰,易于理解和维护。 类型 单分支 if 语句: ...
/usr/bin/env python -- coding:utf8 -- a=input(“请输入a:”) b=input(“请输入b:”) if a > b: print(“a > b”) elif a < b: print(“a < b&rd...Shell if 条件判断 Shell 语言中的if条件 一、if的基本语法: if [ command ];then 符合该条件执行的语句 elif [ command ];then...
switching gears just a bit. Similar to hierarchy, humans, based on your research, have a primal drive toward being with people who are similar to us. So, whether it’s evolutionary coding or conditioning, we seem to...
Which you might have to consider in an IF/THEN/ELSE construct. Another benefit is if you have multiple race fields in your data then you can use the same the informat to read all of them to get the A,B,W etc coding. You would need a separate If/Then/Else block for each varia...
'Else if'in bash scripting, often written as'elif', is used to check multiple conditions in your code. It is used with the syntax,if [firstStatement]; then... elif [secondCondition]; then... else. It’s a powerful tool that allows your scripts to make decisions based on various scen...
1. IF-Then IF THEN is the simplest form of an IF statement. All we need to do is specify a condition to check and if that condition is TRUE it will perform a task. But, if that condition is FALSE it will do nothing and skip the line instantly. ...
// Online C++ compiler to run C++ program online #include <iostream> using namespace std ; int main() { if(!cout<<true){ cout <<"True "; } else {cout <<"False";} return 0; } In this code, condition in if statement is not executing why?
一、条件控制Python条件语句是通过一条或多条语句的执行结果(true或者false)来决定执行的代码块。1、if语句Python中if语句格式为:if condition1: #为true时将执行statement的语句,如果condition1为false则将判断condition2 statement1 elif condition2: #如果condition2为true ...
if x == y then puts "successful test" end if x == y puts "successful test" end In Ruby it is also possible to use an if as a statement modifier. The following example has the same effect as the previous three examples: puts "successful test" if x == y JOVIAL The following...