why can't i return Array from function?
Hello,
I m trying to find saddle point in a matrix. But when i return array from function the program simply doesn't work at all. I get no output even though there's a saddle point in matrix. Here is the code :-
Code:
#include <iostream.h>
#define M 3
#define N 3
int* find_min(int a[M][N],int row)
{
int *temp,j=1;
temp=new int[2];
temp[0]=a[row][0];
temp[1]=0;
for(j=1;j<N;j++)
{
if(temp[0]>a[row][j])
{
temp[0]=a[row][j];
temp[1]=j;
}
}
return temp;
}
int find_max(int a[M][N],int col)
{
int i,temp;
temp=a[0][col];
for(i=1;i<M;i++)
{
if(a[i][col]>temp)
temp=a[i][col];
}
return temp;
}
void saddle(int a[M][N])
{
int i,max,*min,j;
for(i=0;i<M;i++)
{
min=find_min(a,i);
max=find_max(a,min[1]);
if(min[0]==max)
cout<<"\n\nSaddle Point
:"<<min[0];
}
}
int main(void)
{
int a[M][N]={5,7,3,7,7,9,7,1,2};
saddle(a);
return 0;
}
This code works perfectly now when i write the above function as :-
Code:
int* find_min(int a[M][N],int row)
{
int temp[2],j=1;
temp[0]=a[row][0];
temp[1]=0;
for(j=1;j<N;j++)
{
if(temp[0]>a[row][j])
{
temp[0]=a[row][j];
temp[1]=j;
}
}
return temp;
}
this is not working. Can anybody tell me why is this wrong?
