LAB 5 If Ifelse statements Introduction to Algorithms

LAB 5 If & If-else statements Introduction to Algorithms and Programming COMP 151

Exercise 1: Write a program to check if the entered number by the user is even or odd.

#include<iostream> using namespace std; int main() { int number, r; cout<<"Enter the value for number"<<endl; cin>>number; r=number%2; if(r==0) { cout<<"The given number is even"<<endl; } else { cout<<"The given number is odd"<<endl; } return(0); }

Exercise 2: Write a program to check if the entered number by the user is positive or negative or zero.

#include<iostream> using namespace std; int main() { float number; cout<<"Enter the Value for Number"<<endl; cin>>number; if(number>0) { cout<<"The given number is Positive"<<endl; } else If (number <0) { cout<<"The given number is Negative"<<endl; } else cout<<"The given number Zero"<<endl; return(0); }

Exercise 3: Write a program to check if the entered letter is vowel or not.

#include<iostream> using namespace std; int main() { char letter; cout<<"Enter the character"<<endl; cin>>letter; if((letter=='a')||(letter=='A')||(letter=='e')|| (letter=='E')||(letter=='i')||(letter=='I')|| (letter=='o')||(letter=='O')||(letter=='u')|| (letter=='U')) { cout<<"The given character is Vowel"<<endl; } else { cout<<"The given character is not vowel"<<endl; } return(0); }

Exercise 3: Write a program to check if the Triangle is valid or not

#include<iostream> using namespace std; int main() { float a, b, c, sum; cout<<"Enter the value of the three angles"<<endl; cin>>a>>b>>c; Sum= a+b+c; If (sum ==180) cout<<"The given triangle is valid"<<endl; else cout<<"The given triangle is not valid"<<endl; return(0); }