View Code of Problem 43

#include<stdio.h>
#include<string.h>
#include<ctype.h>
int main()
{
  char str[256];
  int i,k=0,n;
  gets (str);
  n=strlen(str);
  for(i=0;i<n;i++)
  if (tolower(str[i])>='a' && tolower(str[i])<='z')   
  {
     str[k]=str[i];k++;      
  }
  str[k]='\0';
  printf("%s\n",str);
  return 0;
}

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