help:saddle problem in c

[Hoann Huy]

//max_colum min_row
#include<stdio.h>
#include<conio.h>
#include<string.h>
#define N 20
#define M 20
int min_row(int a[],int m,int i)
{
int min,j;
min = *(a+i*m);
for(j=1;j<m;j++){
if(*(a+i*m+j)<min)
min = *(a+i*m+j);
return min;
}
}
int max_colum(int a[],int m,int n,int j)
{
int max,i;
max = *(a+j);
for(i=1;i<n;i++){
if(*(a+i*m+j)>max)
max = *(a+i*m+j);
return max;
}
}
int main()//row is N,colum is M.
{
int a[N*M];
int n,m,i,j;
int min[N],max[M];
printf("input row and colum:");scanf("%d%d",&n,&m);
printf("input matric:");
for(i=0;i<m;i++)
for(j=0;j<n;j++){
printf("a[%d][%d]",i,j);
scanf("%d",a+i*m+j);
}
for(i=0;i<n;i++)
min = min_row(a,m,i);/*error:??????????incompatible type in assignment of int to int[20]*/
for(j=0;j<m;j++)
max = max_colum(a,m,n,i);//error:????
printf("output matric:");//ta se in ma tran theo tung hang.
for(i=0;i<n;i++)
for(j=0;j<m;j++)
printf("%d\t",*(a+i*m+j));
printf("\n");

}

[therockon7throw]

Hi

hey man what is this ? please write what your problem is, and please put your code in code syntax, code cant be read when you dont use code syntax

[Hoann Huy]

ok .man because I'm new user so ......and i try but I can't put my code inside format I chosse code but........it here!!!sorry.