The syntax of an if...else if...else statement in C++ is −if(boolean_expression 1) { // Executes when the boolean expression 1 is true } else if( boolean_expression 2) { // Executes when the boolean expression
The if-else in C++ is the most commonly used decision-making statement. It is used to decide which block of statements will be executed based on the result of the conditional statement. Here also, the condition has only two boolean values, i.e., either true or false....
Use if-else, if-else with initializer, and if-constexpr statements to control conditional branching.
编写一个同时执行两个 if-else 块语句的 C/C++ 程序。 Syntaxofif-elsestatementinC/C++languageis: if(Booleanexpression) { // Statement will execute only // if Boolean expression is true } else { // Statement will execute only if // the Boolean expression is false } 因此我们可以得出结论,只有...
Ladder if-else statement example in C++: program to enter a character and validate whether it is an alphabet or digit, here we are using ladder if-else (multiple if-else) form of conditional statements in C++.
if (condition) statement else statement If the condition is true, the first statement executes, otherwise the second statement after the else keyword executes. Example: Copy #include <iostream> int m.ain() /* w ww. j a va 2 s. c o m*/ { bool b = false; if (b) std::cout...
// if_else_statement.cpp#include<iostream>usingnamespacestd;intmain(){intx =10;if(x <11) {cout<<"x < 11 is true!\n";// executed}else{cout<<"x < 11 is false!\n";// not executed}// no else statementboolflag =false;if(flag ==true) { x =100;// not executed}int*p =new...
// if_else_statement.cpp#include<iostream>usingnamespacestd;intmain(){intx =10;if(x <11) {cout<<"x < 11 is true!\n";// executed}else{cout<<"x < 11 is false!\n";// not executed}// no else statementboolflag =false;if(flag ==true) { x =100;// not executed}int*p =new...
C++ if-else Statement to check double type value #include<iostream>#include<cmath>usingnamespacestd;intmain()//fromwww.java2s.com{doubleradius; cout <<"Please type in the radius: "; cin >> radius;if(radius < 0.0) cout <<"A negative radius is invalid"<< endl;elsecout <<"The area...
Useelseto specify a block of code to be executed, if the same condition is false Useelse ifto specify a new condition to test, if the first condition is false Useswitchto specify many alternative blocks of code to be executed The if Statement ...