C program to Convert String to Uppercase without using strupr()
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C++ Program to Convert String to Uppercase
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Convert a String In C++ To Upper Case - Stack Overflow
Convert String from Lower case to Upper case in C Language
Use the function toupper() in combination with the .strstr() function to find out whether one string occurs in another, ignoring case. - C String
C++ toupper()
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Conversion of whole String to uppercase or lowercase using STL in C++ - GeeksforGeeks
C Program: Convert a string to uppercase - w3resource
C Program to convert lowercase string to UPPERCASE string - E-Computer Concepts
Convert Uppercase to Lowercase in C - javatpoint
C Program to Convert Lowercase to Uppercase
