refactoring: simplified randomisation in easy_math

src/main/quizproject.c

@@ -27,6 +27,24 @@ int* randomNumber() {
    return arr;
 }
 
+int* randomNumber1() {
+   srand(time(NULL));
+   int k = 0, p;
+   static int arr[32];
+   while(k<32){
+       int num =rand()%32;
+       for (p = 0; p < k; p++){
+           if(arr[p]==num){
+               break;
+           }
+       }
+       if(p==k){
+           arr[k++]=num;
+       }
+   }
+   return arr;
+}
+
 
 //------------Math_quiz_begin------------
 
@@ -115,20 +133,7 @@ void math_choose_question(int num1) {
 
 
     };
-    srand(time(NULL));
-    int k = 0, p;
-    static int arr[32];
-    while(k<32) {
-        int num = rand() % 32;
-        for (p = 0; p < k; p++) {
-            if (arr[p] == num) {
-                break;
-            }
-        }
-        if (p == k) {
-            arr[k++] = num;
-        }
-    }
+      int* arr = randomNumber1();
     
     int num2 = arr[num1];
     printf("%s", choose[num2]);
@@ -170,20 +175,7 @@ int math_answer(int num1) {
         80,
         10
     };
-    srand(time(NULL));
-    int k = 0, p;
-    static int arr[32];
-    while(k<32) {
-        int num = rand() % 32;
-        for (p = 0; p < k; p++) {
-            if (arr[p] == num) {
-                break;
-            }
-        }
-        if (p == k) {
-            arr[k++] = num;
-        }
-    }
+      int* arr = randomNumber1();
 
     int num2 = arr[num1];
     return ans[num2];

src/main/quizproject.h

@@ -151,6 +151,7 @@ void math_quiz_option();
 void math_solution(char [][10], int);
 void goodbye_message();
 void final_score();
+int* randomNumber1();
 //-------brain_whiz_header_end-------------