without including #include<ctype.h>
- by venkat
Hi,i am written below program .... without including #include also i am able to execute the program.... where these prototype are declare?
1)
include
int main()
{
if(isalnum(';'))
printf("character ; is not alphanumeric");
if(isalnum('A'))
printf("character A is alphanumeric ");
return 0;
}
2)
include
int main()
{
printf("Lower case of A is %c \n", tolower('A'));
printf("Lower case of 9 is %c \n", tolower('9'));
printf("Lower case of g is %c \n", tolower('g'));
printf("ASCII value of B is %d \n", toascii('B'));
printf("Upper case of g is %c \n", toupper('g'));
return 0;
}
