View Code of Problem 77

#include <stdio.h>
#include <string.h>
int main(){
  char str[100];
  scanf("%s",str);
  insert(str);
  return 0;
}
void insert(char a[]){
  int i;
  for(i=strlen(a);i>0;i--){
    a[2*i]=a[i];
    a[2*i-1]=' ';
  }
  printf("%s\n",a);
}

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