by Dinesh Thakur Category: C Programming (Pratical)

 

#include <ctype.h>

#include <stdio.h>
int main(void)
{
    char ch;
    clrscr();
    printf(". to exit:");
    for(;;)
        {
           ch = getc(stdin);
           if(ch == '.')
             break;
           if(isalnum(ch))
             printf("%c is alphanumeric\n", ch);
        }
             getch();
             return 0;
  } 
About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.



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