write program will 1 read lower case character letter user program supposed

/*Write a program that will 1- read a lower case character letter from the user. The program supposed to 2 – convert the input character to upper case and display both input and output characters. 3- The conversion from lower case should be done using a user-defined function called convChar(). Note: to convert a character from lower case to upper case you need to subtract 32. */