ne_viens
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int matrix()
{
int ret = 0, row, col, rows, cols;
float tmp, sred, **matrica;
//-------------------------------------------------create matrix
printf("Vvedite razmernost massiva(m*n): ");
scanf("%d %d", &rows, &cols);
matrica = (float**)malloc(rows * sizeof(void*));
for(row = 0; row < rows; ++row)
matrica[row] = (float*)malloc(cols * sizeof(float));
//-------------------------------------------------init and print
srand(time(0));
for(row = 0; row < rows; ++row)
{
for(col = 0; col < cols; ++col)
{
tmp = (rand() % 2001 - 1000) / 100.;
if(col == cols - 1)
tmp = -fabs(tmp);
matrica[row][col] = tmp;
printf("%7.2f", tmp);
}
puts("");
}
//-------------------------------------------------locate all negatives column
for(col = 0; col < cols; ++col)
{
for(row = 0; row < rows; ++row)
if(matrica[row][col] >= 0)
break;
if(row == rows)
break;
}
if(row != rows)
{
puts("no column with all negative members found");
ret = -1;
goto L0;
}
//-------------------------------------------------calculate an average
for(tmp = row = 0; row < rows; ++row)
tmp += matrica[row][col];
sred = tmp / rows;
printf("Znachenie dlya vychitania %.2f\n", sred);
//-------------------------------------------------subtract average and print
for(row = 0; row < rows; ++row)
{
for(col = 0; col < cols; ++col)
{
tmp = matrica[row][col] - sred;
matrica[row][col] = tmp;
printf("%7.2f", tmp);
}
puts("");
}
//-------------------------------------------------destroy matrix
L0:
for(row = 0; row < rows; ++row)
if(matrica[row])
free(matrica[row]);
if(matrica)
free(matrica);
return ret;
}
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