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parity check

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array-in-a-matrix 2021-07-06 03:23:21 -04:00
parent 4919e79c09
commit 5323e2353a
1 changed files with 161 additions and 28 deletions
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189
index.c
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@ -8,24 +8,38 @@
void print_matrix(int matrix[GRID_SIZE][GRID_SIZE]);
int random_number(int lower, int upper);
void introduce_noise(int matrix[GRID_SIZE][GRID_SIZE]);
void induce_noise(int matrix[GRID_SIZE][GRID_SIZE]);
void parity_check_1(int matrix[GRID_SIZE][GRID_SIZE]);
void parity_check_2(int matrix[GRID_SIZE][GRID_SIZE]);
void parity_check_3(int matrix[GRID_SIZE][GRID_SIZE]);
void parity_check_4(int matrix[GRID_SIZE][GRID_SIZE]);
int main()
{
srand(time(0));
int message[GRID_SIZE][GRID_SIZE] = {
{ 1, 1, 0, 1},
{ 0, 1, 0, 0},
{ 1, 1, 0, 1},
{ 1, 0, 1, 1}};
// { 0, 1, 2, 3},
// { 4, 5, 6, 7},
// { 8, 9, 10, 11},
// { 12, 13, 14, 15}};
{1, 0, 0, 1},
{0, 1, 0, 0},
{0, 1, 0, 1},
{1, 0, 1, 1}};
print_matrix(message);
introduce_noise(message);
printf("\n");
parity_check_1(message);
printf("\n");
print_matrix(message);
printf("\n");
parity_check_2(message);
printf("\n");
print_matrix(message);
printf("\n");
parity_check_3(message);
printf("\n");
print_matrix(message);
printf("\n");
parity_check_4(message);
printf("\n");
print_matrix(message);
return 0;
@ -49,14 +63,14 @@ int random_number(int lower, int upper)
return num;
};
void introduce_noise(int matrix[GRID_SIZE][GRID_SIZE])
void induce_noise(int matrix[GRID_SIZE][GRID_SIZE])
{
int random_X = random_number(LOWER, UPPER);
int random_Y = random_number(LOWER, UPPER);
printf("\n (Y, X)");
printf("\n (%i, %i)\n\n", random_Y, random_X);
if (matrix[random_Y][random_X] == 0)
{
matrix[random_Y][random_X] = 1;
@ -67,23 +81,142 @@ void introduce_noise(int matrix[GRID_SIZE][GRID_SIZE])
};
};
// void parity_check_1(int matrix[GRID_SIZE][GRID_SIZE]){
// int parity_bit = matrix[0][1];
// };
void parity_check_1(int matrix[GRID_SIZE][GRID_SIZE])
{
int counter = 0;
int col_1[GRID_SIZE], col_3[GRID_SIZE];
// void parity_check_2(int matrix[GRID_SIZE][GRID_SIZE]){
// int parity_bit = matrix[0][2];
// };
for (int i = 0; i < GRID_SIZE; i++)
{
col_1[i] = matrix[i][1];
col_3[i] = matrix[i][3];
};
// void parity_check_3(int matrix[GRID_SIZE][GRID_SIZE]){
// int parity_bit = matrix[1][0];
// };
for (int i = 0; i < GRID_SIZE; i++)
{
if (col_1[i] == 1)
{
counter++;
};
if (col_3[i] == 1)
{
counter++;
};
};
// void parity_check_4(int matrix[GRID_SIZE][GRID_SIZE]){
// int parity_bit = matrix[2][0];
// };
if ((counter % 2) == 0)
{
printf("even number of 1s\n");
matrix[0][1] = 0;
}
else
{
printf("odd number of 1s\n");
matrix[0][1] = 1;
};
};
void parity_check_2(int matrix[GRID_SIZE][GRID_SIZE])
{
int counter = 0;
int col_2[GRID_SIZE], col_3[GRID_SIZE];
for (int i = 0; i < GRID_SIZE; i++)
{
col_2[i] = matrix[i][2];
col_3[i] = matrix[i][3];
};
for (int i = 0; i < GRID_SIZE; i++)
{
if (col_2[i] == 1)
{
counter++;
};
if (col_3[i] == 1)
{
counter++;
};
};
if ((counter % 2) == 0)
{
printf("even number of 1s\n");
matrix[0][2] = 0;
}
else
{
printf("odd number of 1s\n");
matrix[0][2] = 1;
};
};
void parity_check_3(int matrix[GRID_SIZE][GRID_SIZE])
{
int counter = 0;
int row_1[GRID_SIZE], row_3[GRID_SIZE];
for (int i = 0; i < GRID_SIZE; i++)
{
row_1[i] = matrix[1][i];
row_3[i] = matrix[3][i];
};
for (int i = 0; i < GRID_SIZE; i++)
{
if (row_1[i] == 1)
{
counter++;
};
if (row_3[i] == 1)
{
counter++;
};
};
if ((counter % 2) == 0)
{
printf("even number of 1s\n");
matrix[1][0] = 0;
}
else
{
printf("odd number of 1s\n");
matrix[1][0] = 1;
};
};
void parity_check_4(int matrix[GRID_SIZE][GRID_SIZE])
{
int counter = 0;
int row_2[GRID_SIZE], row_3[GRID_SIZE];
for (int i = 0; i < GRID_SIZE; i++)
{
row_2[i] = matrix[2][i];
row_3[i] = matrix[3][i];
};
for (int i = 0; i < GRID_SIZE; i++)
{
if (row_2[i] == 1)
{
counter++;
};
if (row_3[i] == 1)
{
counter++;
};
};
if ((counter % 2) == 0)
{
printf("even number of 1s\n");
matrix[2][0] = 0;
}
else
{
printf("odd number of 1s\n");
matrix[2][0] = 1;
};
};