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Hi!

I am trying to make a function, which transposes matrix. When declaring it, i get this error, which i mention in the title. I`ve tried to find the solution myself, but i am quite new to C, so i don`

t even understand what does this error mean. (I know what is pointer, but don```
t know how to fix the error.)
please could anyone explain what causes this error? And please have a look at my code, i am afraid that this won
```

t be the only error. So if someone will find any obvious errors, please let me know.

Thanks.

```
#include <stdio.h>
#include <stdlib.h>
#define MAX_ROW 50
#define MAX_COL 50
int transp(int i, int j, int m, int n, int temp, int mat[i][j]);
int main(void)
{
int i, j, m, n, temp;
int mat[MAX_ROW][MAX_COL];
// variable dim is set to smaller value of defined
// maximal number of rows and columns
int dim = (MAX_ROW < MAX_COL)? MAX_ROW : MAX_COL;
// input of matrix dimension
do {
printf("input nuber of rows < %d :", dim);
scanf("%d", &m);
printf("input number of cols < %d:", dim);
scanf("%d", &n);
} while (m < 1 || m > dim || n < 1 || n > dim);
// input of elements
printf("\ninput of elements:\n");
for (i = 0; i < m; i++) {
for (j = 0; j < n; j++) {
printf("input element [%d][%d] : ", i, j);
scanf("%d", &mat[i][j]);
}
}
// printing matrix before transposing
printf("\n\matrix before transposing:\n");
for (i = 0; i < m; i++) {
for (j = 0; j < n; j++) {
printf("%3d", mat[i][j]);
}
printf("\n");
}
// print after transposing
// number of rows becomes number of columns ...
printf("\nMatrix after transposing:\n");
for (i = 0; i < n; i++) {
for (j = 0; j < m; j++) {
[ICODE]printf("%3d", transp(i, j, m, n, temp, mat[i][j])); [/ICODE]// i get the error on this line
}
printf("\n");
}
} //end of main
/************function transp****************//////
int transp (int i, int j, int m, int n, int temp, int mat[i][j])
{
for ( i=0; i<m; ++i )
{
for ( j=i+1; j<n; ++j )
{
temp = mat[i][j];
mat[i][j] = mat[j][i];
mat[j][i] = temp;
return (mat[j][i]);
}
}
```

*Edited
by Reverend Jim*: Fixed formatting