C program to convert uppercase to lowercase and vice versa in file

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Write a C program to convert uppercase to lowercase and vice versa in file. How to convert uppercase characters to lowercase and vice versa in a file in C programming. Logic to convert uppercase characters to lowercase and vice versa in C program.

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C program to find occurrence of a word in file

Write a C program to find occurrence of a word in file. How to find first or last occurrence of a word in file in C programming. Logic to find occurrence of a word in file in C program. How to search first and last occurrence of a word in file in C programming.

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