/* This is a sample C program which will
ask the user for a 4X4 matrix, */
/* call a function to compute it's
transpose, and output the result.*/
/* Include the standard C library functions */
#include<stdio.h>
/* Declare transpose() */
void transpose(double a[4][4], double t[4][4]);
/* Begin the main program */
void main()
{
/* This is the variable declaration section */
int i, j;
double a[4][4], t[4][4];
printf("You will now enter matrix A.\n");
/* Input matrix from keyboard */
for (i=0; i<4; i++)
for (j=0; j<4; j++) {
printf("Enter matrix element [%d,%d]: ", i, j);
scanf("%lf", &a[i][j]);
}
/* Call the function */
transpose(a, t);
printf("The transpose of matrix A is :\n\n");
/* Print the results on the screen */
for (i=0; i<4; i++) {
for (j=0; j<4; j++)
printf("%lf ", t[i][j]);
printf("\n");
}
} /* End of main program */
/* Function to compute the transpose of "a",
returning the result in "t". */
void transpose(double a[4][4], double t[4][4])
{
/* These variables are local to this function */
int row, col;
for (row=0; row<4; row++)
for (col=0; col<4; col++)
t[row][col] = a[col][row];
} /* End of function */