How to implement some find and replace function

[zealberto]

I've spending some on my time on this issue but unfortunately I couldn't completed what I'm trying to achieve.

My objective is to implement this kind of function.

char * findandreplace(char *originalstr, char *str1, char *str2) // maybe strings size as arguments too ?

In which the function would replace any ocurrence of str1 in originalstr for str2, any thoughts on this?

Thanks in advance,
Zé Alberto

[jsmith]

STL string has the replace method. You just need to do it in a loop.
The bare string manipulations are complex if, for example, the length of
str2 is not exactly equal to the length of str1.

[zealberto]

Where can i know more about "STL string" ?

[jRaskell]

The reference section of this site is a good place to start.

[writetonsharma]

STL find replace algo is not the best so you can implement KMP algo which will be better. google kmp search.