#include <ctype.h> // Common functions: int isalnum(int c); // alphanumeric int isalpha(int c); // alphabetic int isdigit(int c); // digit int islower(int c); // lowercase int isupper(int c); // uppercase int tolower(int c); // convert to lowercase int toupper(int c); // convert to uppercase
gcc program.c -o program Please clarify what refers to, and I’ll give you the exact download/content. cype download
To use it, just compile normally: