Rules Of Switch Case In C++ There are a few rules that must be complied with when using switch case statements in a C++ langauge. They are as follows: 1. The output of a switch expression should be a constant. The outcome of the expression must be a constant value. It would not be...
Switch case statement is used when we have multiple conditions and we need to perform different action based on the condition. When we have multiple conditions and we need to execute a block of statements when a particular condition is satisfied. In such case either we can use lengthyif..else...
[Error] the value of 'arr' is not usable in a constant expression We can group all thecasestatements performing the same task. #include<iostream>using namespace std;intmain(){charx='A';switch(x){case'a':case'e':case'i':case'o':case'u':case'A':case'E':case'I':case'O':case...
// switch_statement2.cpp// C2360 expected#include<iostream>usingnamespacestd;intmain(intargc,char*argv[]){switch(tolower( *argv[1] ) ) {// Error. Unreachable declaration.charszChEntered[] ="Character entered was: ";case'a': {// Declaration of szChEntered OK. Local scope.charszChEnte...
Data type of case labels of switch statement in C++? 在C++ switch 语句中,每个case 标签的表达式必须是整数常量表达式。例如,以下程序编译失败。 CPP实现 /* Using non-const in case label */ #include<stdio.h> intmain() { inti=10; intc=10; ...
文件main.cpp #include<iostream> using namespace std; int main(int argc, char *argv[]) { int a =0; switch(a) { case 0: int b=1;cout<<b<<endl;break; case 1: cout<<b<<endl;break; default:break; } return 0; } 1.
0 - This is a modal window. No compatible source was found for this media. stdchargrade='D';switch(grade){case'A':cout<<"Excellent!"<<endl;break;case'B':case'C':cout<<"Well done"<<endl;break;case'D':cout<<"You passed"<<endl;break;case'F':cout<<"Better try again"<<endl;...
C++中的switch case语句。 switch case语句是一种控制结构,允许程序根据变量的值执行不同的代码。它类似于if-else语句,但对于处理多个情况更有效。 语法。 switch case语句的语法如下: cpp. switch (变量) {。 case值1: //如果变量等于值1,则执行的代码。 break; case值2: //如果变量等于值2,则执行的代码...
Flowchart of C++ switch...case statement Example: Create a Calculator using the switch Statement // Program to build a simple calculator using switch Statement#include<iostream>usingnamespacestd;intmain(){charoper;floatnum1, num2;cout<<"Enter an operator (+, -, *, /): ";cin>> oper;cout...
1.在switch语句中,“case 常量表达式”只相当于一个语句标号, 表达式的值和某标号相等则转向该标号处开始执行,但不能在执行完该标号的语句后自动跳出整个switch 语句,所以出现了继续执行所有后面case语句的情况。 这是与前面介绍的if语句完全不同的,应特别注意。switch中的break;就有点相当于if中的花括号{} ...