Appended mode ?

[tvn007]

Below is my code:

ofstream out(Results);
if (!out.is_open()){
cerr <<"Cannot open file" "" <<Results<<endl;
exit(EXIT_FAILURE);


However, everytime I run the program, it wipes out previous data.
Is there an "append mode?

thanks for any help.

 

[Victor Bazarov]

Below is my code:

ofstream out(Results);
if (!out.is_open()){
cerr <<"Cannot open file" "" <<Results<<endl;
exit(EXIT_FAILURE);


However, everytime I run the program, it wipes out previous data.
Is there an "append mode?

What does your FM say about 'ofstream' constructors? Hint: there is
the second argument that controls the mode in which the file is opened.
HintHint: std::ios::app

V