Can anyone explain why this simple trivia game is not working?

Code:

---


#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <ctype.h>


//Trivia Game


//Function Prototypes
int people(void);
int places(void);
void pause(int);


//Global Variables
int answer=0;


//Main


main()
{


  do
  {
      system("clear");
    printf("\t\tTrivia Game\n");
    printf("\tEnter a Choice:\n");
    printf("1.People");
    printf("2.Places");
    printf("3.Quit");
    scanf("%d",answer);
    switch(answer)
    {
        case 1:
        if (people()==2)
        printf("\nCorrect\n");
        else
        printf("\nIncorrect\n");
        pause(2);
        break;


        case 2:
        if (places()==2)
        printf("Correct\n");
        else
        printf("Incorrect\n");
        pause(2);
        break;
    }
while (answer!=3);
  }
}


int places(void){
    int choice=0;
    printf("What place is warmer?\n");
    printf("1.Alaska\n");
    printf("2.Hawaii\n");
    printf("Pick Your Choice!\n");
    scanf("%d",&choice);
    pause(2);
    return choice;
}


int people(void)
{
    int choice=0;
    printf("What person was president?\n");
    printf("1.Hilary Clinton");
    printf("2.Bill Clinton");
    scanf("%d",&choice);
    pause(2);
    return choice;
    }


void pause(int inNum)
{
    int iCurrentTime=0;
    int iElapsedTime=0;
    iCurrentTime=time(NULL);
    do
    {
        iElapsedTime = time(NULL);
    }
    while
    ((iElapsedTime-iCurrentTime)<inNum);
}

---

You are going to be more specific than "not working"

What is it doing? What would you like it to do?

First thing that jumps out at me:

main() should be "int main (void)" and you should have a return statement at the end of main.

also:

scanf("%d", &answer);

you forgot the &

It doesn't work, because it doesn't compile.

$ gcc -Wall foo.c
foo.c:23:1: warning: return type defaults to ‘int’ [-Wreturn-type]
foo.c: In function ‘main’:
foo.c:35:5: warning: format ‘%d’ expects argument of type ‘int *’, but argument 2 has type ‘int’ [-Wformat]
foo.c:57:1: error: expected ‘while’ before ‘}’ token
foo.c:95:1: error: expected declaration or statement at end of input
foo.c:95:1: warning: control reaches end of non-void function [-Wreturn-type]

You have a mis-placed brace, and a broken scanf to fix.

So far, PEBKAC.
Start over and explain the problem.

Just add "&" to scanf statement as mentioned before..., and add return statement to main function.. Thats it.. Here's the output

Wow. You guys are great. I'll try it later. Thanks again. God Bless.