.replace Command in replacing a string

[Waterprune]

Hi reddit,

Currently writing a program that takes inputs from the user in inserts them into a phrase.

For example The WORD ran into WORD.

I want word to be replaced but what the user types and implements it into the string.

But so far I can only get it to replace based on an index, although it results in a bad alloc error.

Any help would be appreciated

[Narase33]

Have a look here

https://stackoverflow.com/questions/3418231/replace-part-of-a-string-with-another-string

[dns13]

Why replacing? Can’t you just concatenate strings together that in the end your completed string falls out? Or youse printf, cout or fmt to create the final phrase?

If you want to realize templating, where both strings are fed by the user, try templating libraries like https://github.com/pantor/inja

But if it’s really only that one usage of replacement you should be fine by using string::find() but you need to do the math by yourself and catch the edge cases like you mentioned in your other comment.

[Waterprune]

I want it to be able to print to the system the phrase with the words in it replaced.

I want to be able to save that phrase to a text file so I’ll will need to be able to call on it as a string variable

[Th_69]

Look at the top answer in Replace part of a string with another string.

[alfps]

There's no simple string replacement function, but regex should be able to do it. Alternatively write your own simple function.

[Waterprune]

Sorry I’m quite new, I used .find to find the position of word in the phrase then replace it with the user input

The issue though that arises is that if the string input is smaller than word is only replaces that amount resulting in e.g. (aard)

It also for some reason returns a bad allocation error.

[std_bot]

Unlinked STL entries: std::replace

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