View Code of Problem 43

#include<stdio.h>
#include<math.h>
int main(void)
{
	char s1[90],s2[90];
	gets(s1);
	int i,j=0;
	for(i=0;i<90;i++)
	{
		if((s1[i]>='a'&&s1[i]<='z')||(s1[i]>='A'&&s1[i]<='Z'))
		{
			s2[j]=s1[i];
			j++;
		}
		if(s1[i]=='\0')
		{
			break;
		}
	}
	puts(s2);
 }