申論題

Given the function call matrix_addition(C, A, B), where C, A, and B are presumably 2-D matrices of 3 rows and 3 columns containing double-precision floating-point numbers, and assuming the goal is to perform matrix addition where C=A+B, the function heading for matrix_addition using void as the return type would be as follows:

This function heading indicates that matrix_addition takes three parameters, all of which are 2-D arrays (matrices) with 3 rows and 3 columns containing double-precision floating-point numbers. The matrices A and B are the matrices to be added, and the result is stored in matrix C. Since the matrices are modified and the results are stored directly in one of the parameters (matrix C), there's no need for a return value, hence the use of void as the return type.