GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
Unix |
Unix v7 |
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atof(3) |
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atof, atoi, atol − convert ASCII to numbers
double
atof(nptr)
char *nptr;
atoi(nptr)
char *nptr;
long
atol(nptr)
char *nptr;
These functions convert a string pointed to by nptr to floating, integer, and long integer representation respectively. The first unrecognized character ends the string.
Atof recognizes an optional string of tabs and spaces, then an optional sign, then a string of digits optionally containing a decimal point, then an optional ’e’ or ’E’ followed by an optionally signed integer.
Atoi and atol recognize an optional string of tabs and spaces, then an optional sign, then a string of digits.
scanf(3)
There are no provisions for overflow.
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atof(3) | |