View Code of Problem 43

#include<stdio.h>
#include<math.h>
#include<string.h>
int main() {
	char s[1000];
	char a[1000];
	int i, j = 0;
	gets(s);
	int n = strlen(s);
	for (i = 0; i < n; i++) {
		if ((s[i] >= 'a'&&s[i] <= 'z') || (s[i] >= 'A'&&s[i] <= 'Z')) {
			a[j] = s[i];
			j++;
		}
	}
	a[j] = '\0';
	puts(a);
	printf("\n");
	return 0;
}