View Code of Problem 43

#include<stdio.h>
int main()
{
	//char s[80], c;
	//int i,j;
	while ((c = getchar())!=EOF)
	{
		if (c >= 'A'&& c<='Z'||c>='a'&&c<='z')
			putchar(c);
	}
	//printf("\0");
	return 0;
}
/*
Main.c: In function 'main':
Main.c:6:10: error: 'c' undeclared (first use in this function)
  while ((c = getchar())!=EOF)
          ^
Main.c:6:10: note: each undeclared identifier is reported only once for each function it appears in
*/