Uppercase/lowercase?

[th3jester]

hi guys!
ok so i have this statement - while(strcmp(x[i],"Stop")!=0); - is there anyway to compare x[i] to all the possible forms of "stop" (Stop, STOP, sTop, etc)?

[Peter87]

You could convert x[i] to lowercase by using std::tolower on each character and then compare it to lowercase "stop".

[giblit]

Just make it all lower or uppercase then compare it to all lower or uppercase. You can do it manually with if statements and loops, you can use tolower/upper with a loop, or you can use std::transform and tolower/upper. There are probably other solutions out there too.

I would just do something like: std::transform(x.begin(), x.end(), x.begin(), tolower); or with c-strings something like std::transform(x, x + size, x, tolower); though this method may not work with unicode haven't tested but I know it works with ascii.

[SIK]

alternatively you can use [_stricmp] which does exactly the same as outlined above.

[Peter87]

Note that _stricmp is a non-standard function.