Why is there no strtoi in stdlib.h?

c libc
Eli picture Eli · May 31, 2011 · Viewed 57.6k times · Source

I have grown accustomed to strtod and variants. I am wondering why there is no strtoi shipped with stdlib.h. Why is it that the integer is left out of this party?

Specifically I am asking why there is not a version of atoi with the safety features of strtod.

Answer

Wiz picture Wiz · May 31, 2011

strtol() converts a string to an integer, a long integer but an integer nevertheless. There is atoi() but it should be avoided in most cases due to the fact that it lacks a mechanism for error reporting from invalid input.

Related questions

C read file line by line

I wrote this function to read a line from a file: const char *readLine(FILE *file) { if (file == NULL) { printf("Error: file pointer is null."); exit(1); } int maximumLineLength = 128; char *lineBuffer = (char *)malloc(sizeof(char) * maximumLineLength); if (lineBuffer == NULL) { printf("Error …

Read More
Are types like uint32, int32, uint64, int64 defined in any stdlib header?

I often see source code using types like uint32, uint64 and I wonder if they should be defined by the programmer in the application code or if they are defined in a standard lib header. What's the best way to …

Read More
stdlib and colored output in C

I am making a simple application which requires colored output. How can I make my output colored like emacs and bash do? I don't care about Windows, as my application is only for UNIX systems.

Read More