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새싹교실/2012/사과나무



1.

1회2회3회-13회-2

2.1. 1회 (3 21 , 3 22)

2.1.1.

3/21 - 함 행.
, .
,
, , ,
해하 . ;
, 해 했 ,
.
printf() scanf() .

2.1.2.

  • : F4(ThreeFs + Future Action Plan) .
    • : ThreeFs, ThreeFs(크), FiveFs(크)

      • Facts, Feelings, Findings, Future Action Plan. , , , , 획.
      • : " 5 .() .() .() .( 획)"

  • . . . . . 히 하 . . . . -

  • . . . . . -

2.2. 2회(3 28)


2.2.1.

  • . ' ' #include #define . , switch if . 행하 .
  • : .

2.2.2.


  • , ' ' , . . . . -
  • . . , . !! -
  • . . . , rand() . k p default k p . . 2 . -

2.3. 3회-1

2.3.1.

  • 해 1 . 호호환 . .
  • 19 .

2.4. 3회-2

  • .
  • 19X19 3 .

#include <stdio.h>

int main()
{
	int i,j,k=0;

	for(i=1;i<19;i+=3){
		
		/*for(j=1;j<20;j++){
			k=i;
			printf("%d * %2d = %3d\t",k,j,k*j);
			k++;
			printf("%d * %2d = %3d\t",k,j,k*j);
			k++;
			printf("%d * %2d = %3d\n",k,j,k*j);
		} //       .
                */

		for(j=1;j<20;j++,i-=2){
			printf("%d * %2d = %3d\t",i,j,i*j);
			i++;
			printf("%d * %2d = %3d\t",i,j,i*j);
			i++;
			printf("%d * %2d = %3d\n",i,j,i*j);
		}
		printf("\n");

		printf("\n");
	}

	for(i=19;i<20;i++){
		for(j=1;j<20;j++){
			printf("%d * %2d = %3d\n",i,j,i*j);
		}
	}
	
		return 0;

  • switch if .


#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main()
{
	int i;
	int j;

	srand(time(NULL));

	i=rand()%4;



	if(i==1) printf("1\n");
	else if(i==2) printf("2\n");
	else if(i==3) printf("3\n");
	else printf("0\n");

	/*switch(i){

	case 1:
		printf("1\n");
		break;
	case 2:
		printf("2\n");
		break;
	case 3:
		printf("3\n");
		break;
	default:
		printf("0\n");
		break;
		
	}
	*/

	return 0;

}


  • 1. 1~255
  • 2. -1
  • 3. 19X19

2.4.1.

  • 19X19 3 . . . 히 해 , . -

  • . . \t ,int k . 2 . 편협한 . . 한 . -


    1. 1~19
    2. if, switch, else-if, for, while, do-while .
    3. .
    4. ! -


  • - 6



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