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C++ if-elseIn C++ programming, if statement is used to test the condition. There are various types of if statements in C++.
C++ IF StatementThe C++ if statement tests the condition. It is executed if condition is true. if(condition){ //code to be executed } C++ If Example#include <iostream> using namespace std; int main () { int num = 10; if (num % 2 == 0) { cout<<"It is even number"; } return 0; } Output:/p> It is even number C++ IF-else StatementThe C++ if-else statement also tests the condition. It executes if block if condition is true otherwise else block is executed. if(condition){ //code if condition is true }else{ //code if condition is false } C++ If-else Example#include <iostream> using namespace std; int main () { int num = 11; if (num % 2 == 0) { cout<<"It is even number"; } else { cout<<"It is odd number"; } return 0; } Output: It is odd number C++ If-else Example: with input from user#include Output: Enter a number:11 It is odd number Output: Enter a number:12 It is even number C++ IF-else-if ladder StatementThe C++ if-else-if ladder statement executes one condition from multiple statements. if(condition1){ //code to be executed if condition1 is true }else if(condition2){ //code to be executed if condition2 is true } else if(condition3){ //code to be executed if condition3 is true } ... else{ //code to be executed if all the conditions are false } C++ If else-if Example#include <iostream> using namespace std; int main () { int num; cout<<"Enter a number to check grade:"; cin>>num; if (num <0 || num >100) { cout<<"wrong number"; } else if(num >= 0 && num < 50){ cout<<"Fail"; } else if (num >= 50 && num < 60) { cout<<"D Grade"; } else if (num >= 60 && num < 70) { cout<<"C Grade"; } else if (num >= 70 && num < 80) { cout<<"B Grade"; } else if (num >= 80 && num < 90) { cout<<"A Grade"; } else if (num >= 90 && num <= 100) { cout<<"A+ Grade"; } } Output: Enter a number to check grade:66 C Grade Output: Enter a number to check grade:-2 wrong number
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