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ATOI.C
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1997-01-12
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275b
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17 lines
/*
** 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);
}