which types program practice we can do after completing concepts and basic program in c++

Hey Ritik!! In c++ series/pattern program:c++ program to print lucas series upto nth term.

c++ string problems:1.program to sort names in alphabetical order

2.program to print "*"between the two identical characters in string.

3.program to convert string number into integer.

4.program to determine the color of the chess squares.

C++ recurrsion programs:to solve the stair case problems.

Numerical methods:represnting system of equations using matrix.

program to write the largest number in prime numbers.

Program to extract and print digits in reverse order of a number.

These are some different types of program that helps you to skilled in c++ coding.I hope this might helps you. All the best!!!