We need to solve these 2 tasks in C ++

Please solve in C ++, not C

You need to write code in C ++

1.

Enter the marks of 5 students in Chemistry, Mathematics and Physics (each out of 100) using a structure named Marks having elements roll no., name, chem_marks, maths_marks and phy_marks and then display the percentage of each student.

2

Write a structure to store the name, account number and balance of customers (more than 10) and store their information.

1 ) Write a function to print the names of all the customers having balance less than $200.

2) Write a function to add $100 in the balance of all the customers having more than $1000 in their balance and then print the incremented value of their balance.