I want to use the display function to display the stack data at the end.

In this situation, I take out the for loop at the end of the main function and the printf statement in it and call it as a display function, but I don't know how to write the code.I want an example code.

#include<stdio.h>
#define SIZE5
int stack [SIZE];
intsp;

void push (int value);
int pop(void);

int main (void)
{
sp = 0;
int resp, data;

while(1){
printf("1:push2:pop0:end:");
scanf("%d", & resp);

if(!resp)break;

switch(resp){
case1: printf("push:"); scanf("%d", & data);
push(data);
break;
case2:pop();
break;
}
printf("sp=%d\n",sp);
}
printf("\n");
for(inti=0;i<sp;i++){
printf("stack[%d]=%d\n", i, stack[i]);
}

return 0;
}

void push (int value)
{
if(sp>=SIZE){
printf("The stack is full\n");
} else {
stack [sp++] = value;
}
}

int pop(void)
{
if(sp<=0){
printf("The stack was empty\n");
return 0;
} else {
return stack [--sp];
}
}

2022-09-30 19:45

1 Answers

The code example shows how to think about @metropolis' introduction.

Do you need results after calling and processing?→No need→Return value is void
What variables or values do you use?
- Arrangement of integers representing the stack→stack[]
- Number of valid data from the top of the list above→sp
- Counter for looping→i
What variables or values do you specify as parameters?(Depending on how you think as an option: Either is fine.)
- None→Parameters are void: Required variables stack[] and sp are defined globally & other push()/pop() functions do not specify them
- int[] (stack[]) and int (sp) as parameters → Allow parameters to specify what to process for scalability and versatility
What should I do with the initial display start position of the stack contents?(Depending on how you think as an option: Either is fine.)
- Adjust the first display start position in the display() function → printf("\n"); before the for loop of the display() function so that it always appears from the beginning of the line
- display() function specializes in displaying stack contents, leaving the initial display start position adjustment to the caller→display() function only in the for loop
main()The self-made functions you call in the function are pre-prototyped, such as void push(int value); and int pop(void);
Create a display() function to match the above and move the stack content display process
Insert the action to invoke the display() function into the original stack content display action

Arrangement of integers representing the stack→stack[]
Number of valid data from the top of the list above→sp
Counter for looping→i

None→Parameters are void: Required variables stack[] and sp are defined globally & other push()/pop() functions do not specify them
int[] (stack[]) and int (sp) as parameters → Allow parameters to specify what to process for scalability and versatility

Adjust the first display start position in the display() function → printf("\n"); before the for loop of the display() function so that it always appears from the beginning of the line
display() function specializes in displaying stack contents, leaving the initial display start position adjustment to the caller→display() function only in the for loop

2022-09-30 19:45

If you have any answers or tips

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