我正在学习C语言中的指针，并且从一个基本概念开始，但是我一直在出错。 我究竟做错了什么？

Question

I am learning about pointers in C and am starting with a basic idea: using a pointer to go through and change an array. Then print that array. What mistakes am I making?

I was told you can go through an array by assigning it to a pointer variable, as I have done below:

int main(void){
  int i = 0;
  char entry[40], n, p;

  p = entry;

  printf("Enter a sentence: ");
  while ((n = getchar()) != '\n'){
    *(p + i) = n;
    i++;
  }
  *(p + i) = 0;

  printf("%s", p);

  return 0;
}

I've been experimenting with different ways of doing this for a bit now and could use some help. I keep receiving errors such as:

• assignment makes integer from pointer without a cast

• invalid lvalue in assignment

Answer 1

• assignment makes integer from pointer without a cast

  This refers to code p = entry where you try to assign a pointer ( entry ) to p which is of type char

• invalid lvalue in assignment

  This refers to *(p + i) = n as (p + i) is a number (a char can be considered as an int for this case) and not a pointer, thus cannot be assigned.