Fixed 2D Arrays
Arrays allocated on the stack
Allocation: int fixed[50][100];
Access: fixed[5][10] = 1; or: fixed[0][5*100+9] = 1; or: fixed[1][4*100+9] = 1; etc..
Initialization example: Inefficient : for (i=0;iអi++) for (j=0;jj++) fixed[i][j] = 0; int *ptr = fixed[0]; int *end = fixed[49]+99; *end = 0; /* or end = fixed+100 */ while (ptr != end) *ptr++ = 0;
Passing to a function Function prototype: void foo(int fixed[50][100]); Function call: foo(vec);