069_ctype庫函數的使用-1

判斷一個字符是否是十進制數組 #include "stdio.h" #include "ctype.h" unsigned char s[] = "1234567890abc"; int main(void) {     int i = 0;     while(s[i] != '\0')     {         if(isdigit(s[i]))         {          

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