How do I ignore certain scan calls when using scanf() in C? (READ BODY)

Question

I apologize if the title is misleading in anyway, because I don't know where or how to start on this one.

Recently I wrote a math game that makes random numbers and turns them into equations. But all the program can do Is take in numbers, if I wanted to allow commands like say show-stats to show your stats. I have to write the command and then a number after for the command to get recognized like so

show-stats 0
score is 1

show-stats
0             //number is required for some reason
score is 1

This is a minimal example I wrote

#include <stdio.h>
#include <string.h>

int main() {
 int bar;
 char foo[]="";
 int score = 1;
    
 scanf("%s%i",foo,&bar);
 if(strcmp(foo,"show-stats"))
 {
  printf("Score is %i",score);
 }
 
 if(bar == 2)
 {
  score = bar*2;
  printf("Doubled Points.\n");
 }
}

Here is the actual code, In case you need. Also, I'd like advisors on the actual code, like if its spaghetti or if something is performance consuming, or just what I can improve on in general if its not too much trouble. thanks in advance and I'm open to suggestions.

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

#define VER 10
#define DIV "-----"

int main()
{
 system("clear");
 
 unsigned int x,y;                                                                                                                                                                   //equation numbers
 int ans,sum;                                                                                                                                                                        //user answer
 unsigned int max = 10;                                                                                                                                                              //max possible number that can be made, cannot go under 10.
 int score;                                                                                                                                                                          //what do you think?
 char operation;
 int correctAnswers = 0,wrongAnswers = 0;

 printf("Math game\nVersion %i.\n",VER);
 for (; ;)
 {
   //phase 1; make numbers.
   srand(time(NULL));
   x = rand() % max;
   y = rand() % max;
   //phase 2; make operation type.
   operation = rand() % 2;
   switch (operation)
   {
    case 0:operation = '+';sum = x + y;break;
    case 1:operation = '-';sum = x - y;break;
   }
   //phase 3; write question to console and get user answer
   printf("What is %i %c %i? ",x,operation,y);                                                                                                                                       //get input
   scanf("%i",&ans);
   //phase 4; determine right answer
   if (ans == sum)
   {
    score++;
    correctAnswers++;
    max++;
    printf("Your correct! +1!\n");
    printf("%sStats%s\nScore:%i\nMax possible number:%i\nCorrect Answers:%i\nWrong Answers:%i\n%s%s%s\n",DIV,DIV,score,max,correctAnswers,wrongAnswers,DIV,DIV,DIV);                   //print stats when user wins,is a seperate call for readability. same thing on line 53 but for loss
   }
   
   else
   {
    score--;
    wrongAnswers++;
    if(max>10){max--;};                                                                                                                                                              //assures max doesn't go under 10
    printf("Wrong! -1\n");
    printf("%sStats%s\nThe correct answer was %i\nMax possible number : %i\nScore : %i\nCorrect Answers : %i\nWrong Answers : %i\n%s%s%s\n",DIV,DIV,sum,max,score,correctAnswers,wrongAnswers,DIV,DIV,DIV);
   }
 }
}

Answer 1

Thanks to DevSolar, I know how to do this. Using fgets() and strtol() you can collect the entire string, and parse it into the command and the number, I read up on strtol here https://www.tutorialspoint.com/c_standard_library/c_function_strtol.htm

edit:

char str[30] = ""; //the string the user types
   fgets(str,30,stdin);
   char *ptr; //the part of the string turned into words
   long ret; //the part of the string turned into numbers

   ret = strtol(str, &ptr, 10); //parameter 1;source string that is parsed;//parameter 2; string part of source.//parameter 3; base
   printf("The number(unsigned long integer) is %ld\n", ret);
   printf("String part is |%s|", ptr);