Programming C++

A) There are three brothers John, Ham and Jonathon. Use the ages of John, Ham and Jonathon as inputs by users. Write a program to find the youngest of the three and out put result.

B) Write a program to check whether a triangle is valid or not, when the three angles of the triangle are entered as inputs by the user. A triangle is valid if the sum of all the three angles are equal 180 degrees.

Thank you