Internally, however, they are stored as zero and one. if() Statements The if() statement is used to check for conditions. Just like we use if in normal English, if() in code is used to test for a condition—they
In instances where the condition yields a false outcome, the code segment enfolded within the secondary set of curly braces (the “else” block) becomes active and is executed. Flowchart of if-else Statement in C: The flowchart of the “if-else” statement helps illustrate its working +--...
#if、#elif、#else、#endif #if可支持同时判断多个宏的存在,与常量表达式配合使用。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #if常量表达式1// ... some codes#elif 常量表达式2// ... other codes#elif 常量表达式3// ...#else// ... statement#endif 常量表达式...
When we need to execute a block of statements only when a given condition is true then we use if statement. In the next tutorial, we will learnC if..else, nested if..else and else..if. C– If statement Syntax of if statement: The statements inside the body of “if” only execute ...
The following are examples of theifstatement: C if( i >0) y = x / i;else{ x = i; y = f( x ); } In this example, the statementy = x/i;is executed ifiis greater than 0. Ifiis less than or equal to 0,iis assigned tox, andf( x )is assigned toy. The statement forming...
If there is multiline code and you do not use curly braces, then only first statement of the body is considered as if statement body. Be sure, when you have to use curly braces or not? Consider the given example: #include<stdio.h>intmain(){inta=10;intb=-10;intc=0;if(a==10)pri...
而是表达式的结果，解释如下1、if语句的形式：if (condition) statement_1 else statement_2...
if(判断条件){ 语句块1 }else{ 语句块2 } 意思是,如果判断条件成立,那么执行语句块1,否则执行语句块2 。其执行过程可表示为下图: 所谓语句块(Statement Block),就是由{ }包围的一个或多个语句的集合。如果语句块中只有一个语句,也可以省略{ },例如: ...
if(!100)//!100为逻辑表达式 printf("expression show!"); for(inti=10; i<10; i++)//for包含3个表达式,分别为i=10 i<10 i++ printf("expression show!"); while(1)//1也是一个表达式 { printf("death loop!"); } 2. 语句 语句指的是当程序运行时执行某个动作的语法结构。它改变变量的值,...
In the last tutorial we learned how to use if statement in C. In this guide, we will learn how to use if else, nested if else and else if statements in a C Program. C If else statement Syntax of if else statement: If condition returns true then the state