c++ - Array List printing wrong numbers -

i new c++ , trying write program take in set of results of exam , print them out in histogram. writing code in stages , @ moment trying take in exam marks , print them out in list make sure working before moving on histogram.

my problem when input numbers array , print them weird number coming up, example enter numbers 1,2,3,4

expected console output: 1 2 3 4

actual output: -858993460 1 2 3 4

so know must problem code not sure can please?

code:

void readexammarks(int exammarks[], int sizeofarray){     cout << "please enter set of exam marks see histogram for:" << endl;    for( int x = 0; x < sizeofarray; x++){       cin >> x;       exammarks[x] = x;    } }  void printexammarks(int exammarks[], int sizeofarray){      system("cls");     for(int x = 0; x < sizeofarray; x++){          cout << exammarks[x] << endl;     } }  int main()  {      int exammarks[5];      readexammarks(exammarks, 5);     printexammarks(exammarks,5);      system("pause"); } 

you reusing x both array index , data:

for( int x = 0; x < sizeofarray; x++){     cin >> x;     exammarks[x] = x; } 

you need use separate variable array index:

int x = 0; for( int idx = 0; idx < sizeofarray; idx++){     cin >> x;     exammarks[idx] = x; }