I have problem with factions

Hi i am knew in the site.
I have got problem with a program, and i think is in factions.
Can sameone help me.
this is code

Code:

 #include <stdio.h>
#include <time.h>
#include <stdlib.h>
#define M 4
#define N 4
int maximum(int board[][4], int , int );
int minium(int board[][4],int ,int );
int main(){
int board[M][N];
int max[4],min[4];
int i,j,min_A={0},max_A={0};
for (i=0;i<M;i++)
for (j=0;j<N;j++){
    
printf("Dwse stoixio[%d][%d]\n",i,j);
scanf("%d",&board[i][j]);}
printf("\n");
for (i=0;i<M;i++){
for (j=0;j<N;j++)
printf(" %3d ",board[i][j]);
printf("\n");
}

printf("To A_max einai to %d",max_A);
  printf("\nmin ana grami\n");
for (i=0;i<N;i++)
printf(" %3d \n",min[i]);
printf("to A_min einai to %d\n",min_A);
printf("\nmax ana stili\n");
for (i=0;i<N;i++)
printf(" %3d \n",max[i]);
system("pause");
} 

int maximum(int board[][4], int m, int n){
    int i,j,min[4],max_A={0};
    for (i=0;i<M;i++){
            min[i]=board[i][0];
        for (j=0;j<N;j++){
             if (board[i][j]<min[i])
                        min[i]=board[i][j]; }}
                  max_A=min[0];
                  for(i=1;i<N;i++)
 if(max_A<min[i])
  max_A=min[i];
return max_A;}

int minium(int board[][4],int m,int n){
    int i,j,max[4],min_A={0};
    for (i=0;i<N;i++){
max[i]=board[0][i];
for (j=0;j<M;j++){
if (board[j][i]>max[i])
max[i]=board[j][i];}}
min_A=max[0];
for(i=1;i<N;i++)
 if(min_A>max[i])
  min_A=max[i];
  return min_A;}

Sorry for my bad english.

FYI - You are never calling the max_A() or min_A() functions.

You can't have a function's name the same as a variable's... max_A=min[0];

i cant make it..

Code:

 #include <stdio.h>
#include <time.h>
#include <stdlib.h>
#define M 4
#define N 4
int maximum(int board[][4], int , int );
int minium(int board[][4],int ,int );
int main(){
int board[M][N];
int max[4],min[4];
int i,j,min_A={0},max_A={0};
for (i=0;i<M;i++)
for (j=0;j<N;j++){
    
printf("Dwse stoixio[%d][%d]\n",i,j);
scanf("%d",&board[i][j]);}
printf("\n");
for (i=0;i<M;i++){
for (j=0;j<N;j++)
printf(" %3d ",board[i][j]);
printf("\n");
}

printf("To A_max einai to %d",minium(board[][4],m,n));
  printf("\nmin ana grami\n");
for (i=0;i<N;i++)
printf(" %3d \n",min[i]);
printf("to A_min einai to %d\n",maximum(board[][4],m,n));
printf("\nmax ana stili\n");
for (i=0;i<N;i++)
printf(" %3d \n",max[i]);
system("pause");
} 

int maximum(int board[][4], int m, int n){
    int i,j,min[4],max_A={0};
    for (i=0;i<M;i++){
            min[i]=board[i][0];
        for (j=0;j<N;j++){
             if (board[i][j]<min[i])
                        min[i]=board[i][j]; }}
                  max_A=min[0];
                  for(i=1;i<N;i++)
 if(max_A<min[i])
  max_A=min[i];
return max_A;}

int minium(int board[][4],int m,int n){
    int i,j,max[4],min_A={0};
    for (i=0;i<N;i++){
max[i]=board[0][i];
for (j=0;j<M;j++){
if (board[j][i]>max[i])
max[i]=board[j][i];}}
min_A=max[0];
for(i=1;i<N;i++)
 if(min_A>max[i])
  min_A=max[i];
  return min_A;}