Category Archives: File

C program to compare two files

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Write a C program to read contents of two files and compare them character by character. How to compare two files character by character and line by line in C programming. Logic to compare two files line by line and print difference line and column number in C program.

Example

File 1

Learn C programming at Codeforwin.
Working with files and directories.

File 2

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Working with array and pointers.

Output

File are not equal. 
Line: 2, column: 14

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C program to append data into a file

Write a C program to read data from user and append data into a file. How to append data at end of a file in C programming. In this post I will explain append mode in file handling. I will cover how to append data into a file in C using append file mode.

Example

Source file content

I love programming.
Programming with files is fun.

String to append

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Output file content after append

I love programming.
Programming with files is fun.
Learning C programming at Codeforwin is simple and easy.

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