Is it possible to use ios::app in C?

Question

I need it for file handling, and my friend told me he used ios::app in C++ but he's not sure if C supports ios::app. And when I Google searched on it, all the information given are based on C++, just wondering if anyone could help here. Thanks!

Answer 1

Maybe not, you can try using C own file opening modes.
Here they are
¹https://www.tutorialspoint.com/c_standard_library/c_function_fopen.htm
²https://www.programiz.com/c-programming/c-file-input-output
³https://www.codesdope.com/c-enjoy-with-files/

Answer 2

As far as I remember in C also there is 'fopen' function for operations read/write file. Try that:

mf=fopen (“myfile/test.txt”,”w”);
fprintf (mf,“test”);
fclose (mf);