how to do a replace string?

[Pleasehelp]

Hi,

lets say if i have a string "mississippi". is there any method available in c++ that let me say replace all the "s" into maybe "a"? and the result of the query would be "miaaiaaippi".

Hope u all understand my above query and would gladly appreciate if anyone could help!

[oler1s]

You could iterate over the string, checking if the character is 's' and make it 'a' instead. I don't know of any built in C++ string method that will do this character find and replace.

[weaknessforcats]

This is where you use the transform algorithm:

transform(str.begin(), str.end(), convertedstr.begin(), aFunction);
 

transform will call the unary function aFunction with each element of str. This function can test for s and change it to a.

Algorithms are put into the STL to avoid writing billions of member functions on classes like string.

[Pleasehelp]

For the transform method, is there any website i can refer to get examples and more on the arguments. i cant seem it find it on the net.
i am wondering how to input the above method for my case

[Laharl]

For the transform method, is there any website i can refer to get examples and more on the arguments. i cant seem it find it on the net.
i am wondering how to input the above method for my case

http://www.cplusplus.com/reference/algorithm/transform.html

The examples are a little farther down from all the complicated stuff.

[Pleasehelp]

any idea how i can iterate a string? i am having trouble understanding the transform method. thus decided to go with iterating over the whole string and changing instead. any suggestions?

[sicarie]

Did you read through the tutorial above? What part were you confused on? We can help you figure that out.

But if you're set on iterating through the string, just create a pointer to a char and point it at the location where the string begins.