What should I do if fopen in C language fails to open a file?

The solution to the failure of fopen to open a file in c language: first create a project to use the fopen function and include the header files that need to be used; then enter the tmain function and the fopen function; then define a pointer variable of type FILE f, and use the if statement to determine whether the file is opened successfully; finally run the program.

[Related learning recommendations: C video tutorial]

Solution to the failure of fopen to open a file in c language Method:

1. Create a new project using the fopen function.

#2. Include the header files you need to use.

3. Enter the _tmain function.

4. View the function prototype of fopen on MSDN.

#5. Enter the fopen function.

#6. Define a pointer variable f of FILE type and accept the return value.

#7. Use the if statement to determine whether the file is opened successfully.

8. Press the shortcut key F5 to run the program and view the results.

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