Letters and Digits Total
#include <stdio.h>
#include <string.h>
int main()
{
char s[1000];
int i,alphabets=0,digits=0,specialcharacters=0;
printf("Enter the string : ");
gets(s);
for(i=0;s[i];i++)
{
if((s[i]>=65 && s[i]<=90)|| (s[i]>=97 && s[i]<=122) )
alphabets++;
else if(s[i]>=48 && s[i]<=57)
digits++;
else
specialcharacters++;
}
printf("Alphabets = %d\n",alphabets);
printf("Digits = %d\n",digits);
printf("Special characters = %d", specialcharacters);
return 0;
}