Does linux have itoa function?

Linux does not have itoa function; itoa is a widely used non-standard C language and C language extension function, but because it is a non-standard C/C language function, it cannot be well used by all compilers; The function of the itoa function is to convert an integer into a string and return a pointer to the converted string.

#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

Does Linux have itoa function?

No.

Today I discovered a problem when writing code under Linux. You can use the atoi function to convert a string into an integer value. When I reversely converted, I found that there is no such function... It's not that I remembered wrongly. You can use the itoa function to convert integer values ​​into strings. I used to have related functions when using VS2013 under Windows. Yes, the function is _itoa (itoa is replaced by _itoa).

When using itoa under Linux, it prompts that there is no such function, as shown in the figure:

The above error indicates that there is no such function. To be more accurate, I checked the stdlib.h library under Linux. There is indeed no itoa function in it. Please see:

And when I look at the c document, I can see that there is an itoa function...

Hey...., then what should we do, implement one ourselves, or search for a section What about code pasting? I think it's not good, it's too troublesome. We can't implement it every time we want to use itoa under Linux. Such development efficiency is too low. So the question is how do we implement the above functions?

We can use sprintf to achieve it! Please take a look at an example in the C documentation, and you will know after reading it.

So in the end we can use the sprintf function to implement this function, and it is very simple. The code is as follows:

char buffer[20]
int n = 123456;
sprintf(buffer,"%d",n);

Recommended study: "linux video tutorial"

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