When calling a function, why do I get these errors? - c

Question

I get these warnings that I believe are preventing anything from printing:
"passing argument 1 of 'printboard' makes pointer from integer without a cast" when I call the function and "expected char(*)[26] but argument is of type 'char'" on line 2.
#include <stdio.h>
void printBoard(char board[26][26], int n){
int i,j,k;
if (i=0){
for (j=1;j<n;j++){
for (k=1;k<n;k++){
board[i][j]=k;
}
printf("%c", k+96);
}
}
if (j=0){
for(i=1;i<n;i++){
for(k=1;k<n;j++){
board[i][j]=k;
printf("%c", k+96);
}
}
}
for (i=1;i<=n;i++){
for (j=1;j<=n;j++){
if (board[i][j]!=board[n/2][n/2]&&board[i][j]!=board[(n/2)+1][(n/2)+1]&&board[i][j]!=board[n/2][(n/2)+1]&&board[i][j]!=board[(n/2)+1][n/2]){
board[i][j]='U';
}
else if (board[i][j]==board[n/2][n/2]&&board[i][j]==board[(n/2)+1][(n/2)+1]){
board[i][j]='W';
}
else {
board[i][j]='B';
}
}
printf("%c", board[i][j]);
}
//n is even
return;
}
int main(void)
{
const char board[26][26];
int dim;
char boardConfig;
printf("Enter the board dimension: \n");
scanf("%d", &dim);
printBoard(board[26][26],dim);

Answer 1

board[26][26] is a char element (out of bounds). You want to pass the entire 2D array board:
printBoard(board,dim);
(also: check return code of scanf, and check if dim is within 1-26 bounds to avoid undefined behaviour)
And when initializing board[i][j]=k; add some ASCII offset (ex: board[i][j]=k+'a';). Otherwise, your code will print non-ASCII characters at the end.

Answer 2

You need to typecast it to the parameter type. There are a number of errors in your code - such as the assignment operators instead of comparison operators. if(i=0) should be if(i==0), etc. I got the code compiled and working, not certain as to what you are trying to do yet, but this should work:
#include <stdio.h>
void printBoard(char board[26][26], int n){
int i = 0;
int j = 0;
int k = 0;
if (i==0){
for (j=1;j<n;j++){
for (k=0;k<n;k++){
board[i][j]=k;
}
printf("%c", k+96);
}
}
if (j==0){
for(i=1;i<n;i++){
for(k=0;k<n;k++){
board[i][j]=k;
printf("%c", k+96);
}
}
}
for (i=1;i<=n;i++){
for (j=1;j<=n;j++){
if (board[i][j]!=board[n/2][n/2]&&board[i][j]!=board[(n/2)+1][(n/2)+1]&&board[i][j]!=board[n/2][(n/2)+1]&&board[i][j]!=board[(n/2)+1][n/2]){
board[i][j]='U';
}
else if (board[i][j]==board[n/2][n/2]&&board[i][j]==board[(n/2)+1][(n/2)+1]){
board[i][j]='W';
}
else {
board[i][j]='B';
}
}
printf("%c", board[i][j]);
}
//n is even
return;
}
int main(void)
{
const char board[26][26];
int dim;
char boardConfig;
printf("Enter the board dimension: \n");
scanf("%d", &dim);
printBoard((char (*)[26])board,dim);
}