#& %$' i (13)#include intmain(void) {inta, b[4]; char str[10] = "hello!"; printf("size of intis...
TRANSCRIPT
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I(13)
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#define GRIDSIZE 8
int main(void) {int grid[GRIDSIZE][GRIDSIZE];int x, y;
for(y = 0; y < GRIDSIZE; y++) {for(x = 0; x < GRIDSIZE; x++) {grid[y][x] = 0;
}}grid[3][3] = 1;grid[3][4] = -1;grid[4][3] = -1;grid[4][4] = 1;
. . .
[8][8][]
0 1 2 3 4 5 6 7 àx012
↓ 3y 4
567
1
1
-1
-1
0
1-1
ex1.c
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• [] – int array[4][3];
–array[y][x] = 1;printf("data = %d¥n", array[2][2]);scanf("%d", &array[j][i]);
•array[4,3];
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void showBoard(int g[GRIDSIZE][GRIDSIZE]);
void showBoard(int g[GRIDSIZE][GRIDSIZE]) {int x, y;
for(y = 0; y < GRIDSIZE; y++) {for(x = 0; x < GRIDSIZE; x++) {if(g[y][x] == 1)printf("* ");else if(g[y][x] == -1)printf("o ");elseprintf(". ");
}printf("¥n");
}}
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . * o . . .
. . . o * . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
ex1.c
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[]•
void func(int array[8][8]) { ... }void func(int array[][8]) { ... }
•void func(int array[][]) { ... }
[]
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• {} –
• {} int data[3][2] = {
{ 4, 5 },{ 2, 3 },{ 1, 7 }
};
0 1
0 4 5
1 2 3
2 1 7
••
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#include
int main(void) {int data[3][2] = {{ 4, 5 },{ 2, 3 },{ 1, 7 }
};int x, y;
for(y = 0; y < 3; y++) {for(x = 0; x < 2; x++) {printf("data[%d][%d] = %d¥n", y, x, data[y][x]);
}}return 0;
}
data[0][0] = 4data[0][1] = 5data[1][0] = 2data[1][1] = 3data[2][0] = 1data[2][1] = 7
ex2.c
data
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(1)
•
•
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
int a, b;char c, d;
int a;
int b;
char c;
char d;
int 32bit(4 )char 8bit
a
b
c
d
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(2)
• 1004 01005 0
1006 0
1007 0
1008
1009
1010
1011
1012 65
1013
1014
1015
a = 0;c = 'A';'A' 65
•
•
a
b
c
d
1
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• scanf%
1004 0
1005 0
1006 0
1007 0
1008
1009
1010
1011
1012 65
1013
1014
1015
scanf("%d", &b);scanf("%c", &d);
• &
• scanf
a
b
c
d
%d int%c char 1
1
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• 10041005
1006
1007
1008
1009
1010
1011
1012 1
1013 0
1014 0
1015 0
int x[3];x[2] = 1;
• x 1004• x int 4• x[2] 2 2
x[0]
x[1]1004 + 2 * 4 = 1012
x[2]
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• 21004
1005
1006
1007
1008
1009
1010
1011
1012 1
1013 0
1014 0
1015 0
1016 2
1017 0
1018 0
1019 0
1020
1021
1022
int x[3][2];x[1][0] = 1;x[1][1] = 2;
•
• 3
x[0][0]
1004 + (1 * 2 + 0) * 4 = 10121004 + (1 * 2 + 1) * 4 = 1016
x[0][1]
x[1][0]
x[1][1]
x[2][0]
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[]•
void func(int array[8][8]) { ... }void func(int array[][8]) { ... }
•void func(int array[][]) { ... }
[]
Q: [] A:
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• sizeof()––
•sizeof(int) sizeof(float)
•int b; char str[10];sizeof(b) sizeof(str)
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#include
int main(void) {int a, b[4];char str[10] = "Hello!";
printf("size of int is %ld¥n", sizeof(int));printf("size of a is %ld¥n", sizeof(a));printf("size of int[4] is %ld¥n", sizeof(int [4]));printf("size of b is %ld¥n", sizeof(b));printf("size of str is %ld¥n", sizeof(str));
return 0;}
size of int is 4size of a is 4size of int[4] is 16size of b is 16size of str is 10
ex3.c
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•float a, b = 1.5;a = (int)b;
– b 1.5) int– a 1.0
•cast : ( )
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#include
int main(void) {float a, b = 1.5;int c = 3;
a = b;printf("%f¥n", a);a = (int)b;printf("%f¥n", a);
a = 1/c;printf("%f¥n", a);a = 1/3.0;printf("%f¥n", a);a = 1/(float)c;printf("%f¥n", a);
return 0;}
1.5000001.0000000.0000000.3333330.333333
ex4.c
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– ( 1) ? ( 2) : ( 3)• 1 0 2
3•
•––
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(1)
• 38–
• turn +1 -1
• 41–
• 42-48–
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(2)
• 51-61–
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53• 64-70
–– human compRandom
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(3)
• 83 initBoard()–
• 99 showBoard()–
•
%-2d• #define
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(4)
• 125 dir[]–
0-7• 137 isPlaceOK()
– role
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•
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(5)
• 166 place()–– isPlaceOK()
• 201 shouldPass()– isPlaceOK()
• 215 human()––
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(6)
• 223 compRandom()––
• 239 countNum()–
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•
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place() isPlaceOK()