Sprintf (?)

[mariohcd]

Hello!
(sorry for my bad english.. english isn't my native language)

so, i'm creating a copy files program.. and a friend of mine said that if I use sprintf to copy, just like this \/ it will do de copy.. but it doesnt work.. =\

sprintf(comand, "xcopy %s %s", cp, cp2);
system(comand);

note: cp = where the file is;
cp2 = where i want the file to be copied;
comand = is a string(char comand[100];

but, when i compile and run the source code, it crashes... why?

Ty. And sorry for my bad english(haha)

[toum]

"comand" has space only for 100 characters. Are you sure the length of the resulting string is always below that limit ?

[Smac89]

sprintf writes to an array/string not to a file int sprintf ( char * str, const char * format, ... );

Try using int fprintf ( FILE * stream, const char * format, ... );

E: Also paste the source code here. I want to see what xcopy is because that might also be contributing to crashing your program.