• What library to use for stoi keyword in c. Ask Question Asked 4 years, 5 months ago. Active 2 years, 8 months ago. Viewed 3k times 0. My question is pretty simple but I can't seem to find it out. I want to know what libary to include when using stoi. I was using atoi.
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Hi, Im using dev c and I cant use the stoi function and I kinda need to use it. I searched how to fix that problem in google but it doesnt seem to work. Is there an alternative way to have the same function as stoi. I cant use atoi because i want to convert a string and atoi requires const char. to be used. Libstdc umm the OP issue is certainly related to gcc.He has to use g.Because Rup(a SO user) says gcc will select the correct back-end compiler based on file extension (i.e. Will compile a.c as C and a.cc as C) and links binaries against just the standard C and GCC helper libraries by default regardless of input languages; g will also select the correct back-end based on extension.

Dev C++ 5.11

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The C library function int atoi(const char *str) converts the string argument str to an integer (type int).

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Dev C++ Soft32

Following is the declaration for atoi() function.


  • str − This is the string representation of an integral number.

Dev C Stoi 2017

Dev C++ Stoi

Return Value

This function returns the converted integral number as an int value. If no valid conversion could be performed, it returns zero.

Stoi In Dev C++


The following example shows the usage of atoi() function.

Let us compile and run the above program that will produce the following result −

Dev C Stoi Song