View Code of Problem 43

#include<stdio.h>
bool isAlpha(char c){
  return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
}
int main(){
  char a[91];
  char b[91];
  char *cur1 = a, *cur2 = b;
  scanf("%s", a);
  while(*cur1 != '\0'){
    if(isAlpha(*cur1)){
      *cur2 = *cur1;
      cur2++;
    }
    cur1++;
  }
  return 0;
}

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