141 lines
2.0 KiB
C++
141 lines
2.0 KiB
C++
//
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// Created by nigel on 25/02/23.
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//
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#include "ctype.h"
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int isupper (int ch){
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if( ch >= 'A' && ch <= 'Z'){
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return 1;
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}
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return 0;
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}
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int islower (int ch){
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if(ch >= 'a' && ch <= 'z'){
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return 1;
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}
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return 0;
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}
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int isalpha (int ch) {
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if(isupper(ch)){
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return 1;
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}
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if(islower(ch)){
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return 1;
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}
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return 0;
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}
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int isdigit (int ch){
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if(ch >= '0' && ch <= '9'){
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return 1;
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}
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return 0;
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}
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int isxdigit (int ch){
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if(isdigit(ch)){
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return 1;
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}
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if( ch >= 'a' && ch <= 'f'){
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return 1;
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}
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if( ch >= 'A' && ch <= 'F'){
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return 1;
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}
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return 0;
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}
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int iscntrl (int ch){
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if(ch >= 0x00 && ch <= 0x1f )
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return 1;
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if(ch == 0x7f)
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return 1;
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return 0;
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}
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int isgraph (int ch){
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if(isdigit(ch))
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return 1;
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if(isupper(ch))
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return 1;
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if(islower(ch))
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return 1;
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if(ispunct(ch))
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return 1;
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return 0;
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}
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int isspace(int ch){
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if (ch == 0x20)
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return 1;
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if(ch == 0x0c)
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return 1;
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if(ch == 0x0a)
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return 1;
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if(ch == 0x0d)
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return 1;
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if(ch == 0x09)
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return 1;
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if(ch == 0x0b)
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return 1;
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return 0;
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}
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int isblank (int ch){
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if( ch == 0x20 || ch == 0x09)
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return 1;
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return 0;
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}
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int ispunct(int ch){
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if(ch >= '!' && ch <= '~')
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return 1;
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return 0;
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}
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int isprint (int ch){
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if (isdigit(ch))
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return 1;
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if(isupper(ch))
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return 1;
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if(islower(ch))
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return 1;
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if(ispunct(ch))
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return 1;
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if(isspace(ch))
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return 1;
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return 0;
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}
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int tolower(int ch){
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if(islower(ch)) return ch;
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int diff = 'a' - 'A';
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return ch + diff;
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}
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int toupper(int ch){
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if(isupper(ch)) return ch;
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int diff = 'a' - 'A';
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return ch - diff;
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}
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int isalnum (int ch){
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if(isdigit(ch)){
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return 1;
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}
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if(isalpha(ch)){
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return 1;
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}
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return 0;
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} |