[10] 다차원 배열

 

* 다차원 배열

1차원
[열, 칸, column, field]

2차원
[행, 줄, row][칸]

3차원
[면][행][열]

--------------------

int idx;
int p[5]={11,22,33,44,55}; //1차원 배열
for(idx=0; idx<5; idx++)
{
   printf("p[%d]=%d ",idx,p[idx]);
}

printf("\n");

int q[2][4]={
                     {10,20,30,40},
                     {50,60,70,80},
                  };

int a,b;
for(a=0; a<=1; a++)
{
   for(b=0; b<=3; b++)
   {
       printf("%d ",q[a][b]);
   }//칸

    printf("\n");

}//열

int su[4][4]={
                     {2,5,3,0},
                     {4,8,9,0},
                     {6,8,7,0},
                     {0,0,0,0}
                   };

//출력결과
2   5   3  10
4   8   8  20
6   8   7  21
12 21 19 
---------------
//가로행의 합
su[0][3]=su[0][0]+su[0][1]+su[0][2]
su[1][3]=su[1][0]+su[1][1]+su[1][2]
su[2][3]=su[2][0]+su[2][1]+su[2][2]

//세로행의 합
su[3][0]=su[0][0]+su[1][0]+su[2][0]
su[3][1]=su[0][1]+su[1][1]+su[2][1]
su[3][2]=su[0][2]+su[1][2]+su[2][2]

for(a=0; a<=2; a++)
{
   for(b=0; b<=2; b++)
   {
       su[a][3]+=su[a][b];//가로행
       su[3][a]+=su[b][a];//세로행
   }
}

for(a=0; a<=3; a++)
{
   for(b=0; b<=3; b++)
   {
       printf("%d ",su[a][b]);
   }//칸

    printf("\n");

}//열

 

 

-----------------------------------------------------

 

#include <stdio.h>

void main()
{

int idx;
int p[5]={11,22,33,44,55}; //1차원 배열
for(idx=0; idx<5; idx++)
{
   printf("p[%d]=%d ",idx,p[idx]);
}

printf("\n");

int q[2][4]={
                     {10,20,30,40},
                     {50,60,70,80},
                  };

int a,b;
for(a=0; a<=1; a++)
{
   for(b=0; b<=3; b++)
   {
       printf("%d ",q[a][b]);
   }//칸

    printf("\n");

}//열

int su[4][4]={
                     {2,5,3,0},
                     {4,8,9,0},
                     {6,8,7,0},
                     {0,0,0,0}
                   };

for(a=0; a<=2; a++)
{
   for(b=0; b<=2; b++)
   {
       su[a][3]+=su[a][b];//가로행
       su[3][a]+=su[b][a];//세로행
   }
}

for(a=0; a<=3; a++)
{
   for(b=0; b<=3; b++)
   {
       printf("%d ",su[a][b]);
   }//칸

    printf("\n");

}//열

}