if anyone sees the answer to this question please change it a bit

This is my code for c language, could you answer as soon as possible

#include int m, n, p, q, c, d, k, sum = 0; /* first, second and multiply array is used to store the first matrix, the second matrix and multiplied result respectively*/ int first[10][10], second[10][10], multiply[10][10];

void input() { printf("Enter number of rows and columns of first matrix "); scanf("%d%d", &m, &n); printf("Enter elements of first matrix "); for (c = 0; c < m; c++) for (d = 0; d < n; d++) scanf("%d", &first[c][d]); printf("Enter number of rows and columns of second matrix "); scanf("%d%d",&p, &q); printf("Enter elements of second matrix "); for (c = 0; c < n; c++) for (d = 0; d < q; d++) scanf("%d", &second[c][d]); }

void output(){

for (c = 0; c < m; c++) { for (d = 0; d < q; d++) printf("%d\t", multiply[c][d]); printf(" "); } }

int main() { input(); for (c = 0; c < m; c++) { for (d = 0; d < q; d++) { for (k = 0; k < p; k++) { sum = sum + first[c][k]*second[k][d]; } multiply[c][d] = sum; sum = 0; } } printf("Product of the matrices: "); output(); }

the task is to draw a structure chart that shows how the two functions developed are called in the main function. In the chart, you need to show what the arguments are and how they are passed in/out of the two functions. Also Modify the current program so the new code will perform matrix-vector product Ax.