Write a C++ program that takes as a string (char array), a 'find' character and a 'replace' characte are required to replace all the occurrences of the 'find' character with the 'replace' character. You should use: cin.getline(arr,size); to take input in arr.

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Header files

A file with an extension that has some predefined declarations and definitions is called a header file. Every computer program imports a set of header files to perform common tasks such as getting input, displaying output, and so forth. Every language has different header files (such as C, JAVA, Python, and C++). In this article, header files are explained mainly in the context of the C/C++ language.