warning : return makes pointer from integer without a cast

Question

struct Stack {
    char top;
    unsigned capacity;
    char* array;
};   
char*pop(struct Stack* stack)
{
    if (isEmpty(stack)){
        printf("Stack underflow\n");
     
    }
        return  stack->array[stack->top--];
}
char* peek(struct Stack* stack)
{
    if (isEmpty(stack)){
      printf("Stack underflow\n");
    }else{
    return stack->array[stack->top];
}}

***main.c:56:29: warning: return makes pointer from integer without a cast [-Wint-conversion]                                                    
main.c:67:24: warning: return makes pointer from integer without a cast [-Wint-conversion]

I have these two warnings and I can't deal with them, I need help, please

the warnings are in these two lines :

 return  stack->array[stack->top--]......
 return stack->array[stack->top]

Answer 1

Change both the function return types to char instead of char* since stack->array[stack->top] is going to return a character and not a char*

Also, on a side note, your peek() doesn't return anything from the if branch. Change that to return something ( a dummy character as per your program logic) or just make it a standalone if statement like the one in pop().