Insertion Array Sorting Method - c++

Question

I am currently a student working on an insertion sort method.
Below is the code:
//Insertion Sorting of an Integer array
void InsertionSort(int insertVals[]){
//Systematic processing of the Array
for(int i = 0; i < INITSIZE - 1; i++){
//Value to check
int temp = insertVals[i];
//Index placeholder for the insterion sort
int k;
//Shifts the int array
for(k = i; k > 0 && insertVals[k-1] > temp; k--){
insertVals[k] = insertVals[k-1];
}
//Inserts the checked value back into the array
insertVals[k] = temp;
}
}
In my tests, I have given it the array from left to right:
307 249 73 158 430 272 44 378 423 209
440 165 492 42 487 3 327 229 340 112
303 169 209 157 60 433 99 278 316 335
97 326 12 267 310 133 479 149 79 321
467 172 393 336 485 245 228 91 194 357
1 153 208 444 168 490 124 196 30 403
222 166 49 24 301 353 477 408 228 433
298 481 135 13 365 314 63 36 425 169
115 94 129 1 17 195 105 404 451 298
188 123 5 382 252 66 216 337 438 144
The method produces from left to right:
314 63 314 63 36 425 36 169 425 169
115 115 94 129 94 129 1 17 195 105
404 451 298 188 123 5 382 252 66 216
337 438 144 1 17 195 105 404 451 298
188 123 5 382 252 66 216 337 438 144
228 229 245 249 252 267 272 278 298 298
301 303 307 310 314 316 321 326 327 335
336 337 340 353 357 365 378 382 393 403
404 408 423 425 430 433 433 438 440 444
451 467 477 479 481 485 487 490 492 144
What am I incorrectly coding?
Thanks!
EDIT:
//In main...
Printing(insertionSortValues, "Insertion Sorted Array");
//Function for Print
void Printing(int vals[], string s){
cout << s << ":" << endl;
for(int i = 0; i < INITSIZE; i++){
if(i % 10 == 0){
cout << endl;
}
cout << setw(3) << vals[i] << " ";
}
cout << endl;
}

Answer 1

The solution to this problem was solved through #PaulMcKenzie.
The line:
for(int i = 0; i < INITSIZE - 1; i++){
needed to become:
for(int i = 0; i <= INITSIZE - 1; i++){
Below is the corrected function.
//Insertion Sorting of an Integer array
void InsertionSort(int insertVals[]){
//Systematic processing of the Array
for(int i = 0; i <= INITSIZE - 1; i++){
//Value to check
int temp = insertVals[i];
//Index placeholder for the insterion sort
int k;
//Shifts the int array
for(k = i; k > 0 && insertVals[k-1] > temp; k--){
insertVals[k] = insertVals[k-1];
}
//Inserts the checked value back into the array
insertVals[k] = temp;
}
}