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ATOI.C
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2000-06-30
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384b
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19 lines
#define NOCCARGC /*no argument count passing*/
/*
** atoi(s) -- convert s to integer.
*/
atoi(s) char *s; {
int sign, n;
while(isspace(*s)) ++s;
sign = 1;
switch(*s) {
case '-': sign = -1;
case '+': ++s;
}
n = 0;
while(isdigit(*s)) n = 10 * n + s++ - '0';
return (sign * n);
}