C/C++ :: Placing Numbers In Random Positions In Matrix?

i have a problem with a bit of code (part of an as-yet incomplete program that creates a sort of maze with 10 roadblocks, and then finds the shortest route to the exit.

I don't know what it means, to put tags around my code, but I shall try to point out the problem bit clearly. It is not a long segment. This part is all working fine and printing the messages the user needs to see initially:

#include <stdio.h>
#include <stdlib.h>
int main() {
printf("The number -1 shall represent the position of the robot in the matrix.
"
"The number 99 shall represent the position of the exit.
"
"The number 100 shall represent all blocks.
"
"All other numbers represent the number of moves required to reach the occupied space from the robot's position.
");

Below is where is goes bad, and I really am not sure why. The program says it has stopped responding and gets grayed out, and then I get the error message, "An access violation (Segmentation fault) raised in your program.

I have tried using the debugger, and it only tells me it found 0 errors and 0 warnings.

srand(time(NULL));
int initialmatrix [8] [8];
initialmatrix [0] [7] = 99;
int numberofblocks=0;
int randomrow;

[code]....