int s_isdigit(const char* s) {
Also I would say almost any "issomething" method involving a loop has an opportunity for an early return.
int s_isdigit(const char* s) {
Also I would say almost any "issomething" method involving a loop has an opportunity for an early return.
int s_isnum(const char* s) {
int result = (*s != '\0');
while (*s != '\0') {
if ((*s < '0') || ('9' < *s)) {
result = 0;
}
s++;
}
return result;
}