In the C language where did they come up with the name atoi
for converting a string to an integer? The only thing I can think of is Array To Integer for an acronym but that doesn't really make sense.
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It means Ascii to Integer. Likewise, you can have
atol
for Ascii to Long,atof
for Ascii to Float, etc.A Google search for 'atoi "ascii to integer"' confirms this on several pages.
I'm having trouble finding any official source on it... but in this listing of man pages from Third Edition Unix (1973) collected by Dennis Ritchie himself, it does contain the line:
In fact, even the first edition Unix (ca 1971) man pages list
atoi
as meaning Ascii to Integer.So even if there isn't any documentation more official than man pages indicating that
atoi
means Ascii to Integer (I suspect there is and I just haven't been able to locate it), it's been Ascii to Integer by convention at least since 1971.I griefly believe that function atoi means ascii to integer.