/* write a function int count_letter(char s[]) that has one parameter string of chars
function returns the total number of letters (upper and case and lower case) in the string 
write main to test the function */

#include<stdio.h>
#include<string.h>
#define SIZE 20
int count_letter(char s[]);
int count_letter1(char s[]);
int main(){
	char s[SIZE];
	printf("enter string\n");
	scanf("%s", s);
	printf("number of letters is %d\n", count_letter(s));
	printf("number of letters is %d\n", count_letter1(s));
	return 1;
}

int count_letter(char s[]){
	int i=0, count=0;
	while(s[i]!='\0'){
		if((s[i]>='a' && s[i]<='z') || (s[i]>='A' && s[i]<='Z'))
			count++;
		i++;
	}
	return count;
}
int count_letter1(char s[]){
	int i, count=0,len=strlen(s);
	for(i=0;i<len;i++){
		if((s[i]>='a' && s[i]<='z') || (s[i]>='A' && s[i]<='Z'))
                        count++;
	}
	return count;
}