b) The following C+ program segment computes C = A * B, where A is an “m" by “n" matrix, B is an "n" by “r" matrix and C is an “m" by “r" matrix. for (long int i = 0; i

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b) The following C++ program segment computes C = A * B, where A is an “m" by “n"
matrix, B is an “n" by “r" matrix and C is an “m" by “r" matrix.
for (long int i = 0; i < m; i++)
for (long int j = 0; j < r; j++)
long double Sum = 0;
for (long int k = 0; k < n; k++)
Sum = Sum + A[i][K] * B[k]D:
CUJN = Sum;
How many times does the code iterate in computing
i) Sum?
ii) The j" column of C, i.e. C[i][j] for a fixed i and j = 1, 2, ,3, ..., r?
iii)
The complete matrix C?
Transcribed Image Text:b) The following C++ program segment computes C = A * B, where A is an “m" by “n" matrix, B is an “n" by “r" matrix and C is an “m" by “r" matrix. for (long int i = 0; i < m; i++) for (long int j = 0; j < r; j++) long double Sum = 0; for (long int k = 0; k < n; k++) Sum = Sum + A[i][K] * B[k]D: CUJN = Sum; How many times does the code iterate in computing i) Sum? ii) The j" column of C, i.e. C[i][j] for a fixed i and j = 1, 2, ,3, ..., r? iii) The complete matrix C?
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