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2 while do-while for break continue

7 while( ) ;

8 #include <stdio.h> 0 i int main(void) int meter; int i = 0; while(i < 3) meter = i * 1609; printf("%d %d \n", i, meter); i++; return 0;

11 i i< 3 () 0 (1) () 1 (1) () 2 (1) () 3 (0)

12 // while #include <stdio.h> int main(void) int n; int i = 1; printf(" : "); scanf("%d", &n); while (i <= 9) printf("%d*%d = %d \n", n, i, n*i); i++; 구구단중에서출력하고싶은단을입력하시오 return 0;

13 // while #include <stdio.h> int main(void) int n; printf("====================\n"); printf(" n n \n"); printf("====================\n"); n = 1; while (n <= 10) printf("%5d n++; return 0; %5d\n", n, n*n);

14 n...

15 #include <stdio.h> int main(void) int i, n, sum; // printf(" :"); scanf("%d", &n); // // i= 1; // sum = 0; while(i <= n) sum += i; i++; // sum = sum + i;. // i = i + 1. printf("1 %d %d \n", n, sum); return 0;

16 // while #include <stdio.h> int main(void) int i, n, sum; i = 0; // sum = 0; // while (i < 5) printf(" : "); scanf("%d", &n); sum = sum + n; // sum += n;. i++; printf(" %d.\n", sum); return 0;

17 100, 200, 300, 400, 500, -1

20 // while #include <stdio.h> int main(void) int grade, n; float sum, average; //. n = 0; sum = 0; grade = 0; printf(" \n");

21 //. while (grade >= 0) printf(" : "); scanf("%d", &grade); sum += grade; n++; sum = sum - grade; //. n--; //. //. average = sum / n; printf(" %f.\n", average); return 0;

22 x, y. y 0 x. r x % y x y y r.

23 // while #include <stdio.h> int main(void) int x, y, r; printf(" (, ( ): ) "); scanf("%d%d", &x, &y); while (y!= 0) r = x % y; x = y; y = r; printf(" %d.\n", x); return 0;

24 if( ) while( )......

25 int i = 1; while(i < 10) printf("\n"): i--; int i = 0; while(i < 3) printf("\n"): i++;. int i = 0; while(i < 3) ; printf("\n"): i++;.

26 do while()....

27 // do..while #include <stdio.h> int main(void). int i = 0; 1 do =1 printf("1--- \n"); printf("2---\n"); printf("3---\n"); printf(".\n"); scanf("%d", &i); while(i < 1 i > 3); printf(" =%d\n",i); return 0;

28 // #include <stdio.h> int main(void) char answer = 'm' char guess; int tries = 0; do printf(" : "); scanf(" %c", &guess); tries++; : a. : s. : b. : z. : m. =5 if( guess > answer ) printf(".\n"); if( (g guess < answer ) printf(".\n"); while(guess!= answer); printf(". =%d \n", tries); return 0;

30 for ( ; ; ) ;.. for...

31 int i; for(i = 0; i < 10; i++) printf("hello World!\n");

33 int i; for(i = 0; i < 10; i++) printf("hello World!\n"); 1 번째반복 0 참 반복 2 번째반복 1 참반복 3 번째반복 2 참반복 4 번째반복 3 참반복 5 번째반복 4 참반복 6 번째반복 5 참반복 7 번째반복 6 참반복 8 번째반복 7 참반복 9 번째반복 8 참반복 10 번째반복 9 참반복

34 // #include <stdio.h> int main(void) int i, sum; sum = 0; for(i = 1;i <= 10; i++) sum += i; // sum = sum + i; printf("1 10 = %d\n",sum); return 0;

35 // #include <stdio.h> int main(void) int i, n; printf(" :"); scanf("%d", &n); printf("====================\n"); printf(" i i \n"); printf("====================\n"); for(i = 1;i <= n; i++) printf("%5d %5d\n", i, i*i*i); return 0;

36 // #include <stdio.h> int main(void) long fact=1; int i, n; printf(" :"); scanf("%d", &n); for(i = 1;i <= n; i++) fact = fact * i; printf("%d! %d.\n",n,fact); return 0;

38 for (i =0; i<10; i+=2) printf("hello World!\n"); for (i = 1; i < 10; i *= 2 ) printf("hello World!\n"); for (i = 0; i < 100; i = (i * i) + 2 ) printf("hello World!\n"); for ( ; i<100; i++ ) printf("hello World!\n"); for (i = 0, k = 0; i < 100; i++ ) printf("hello World!\n"); for (printf(" ) ), i = 0; i < 100; i++ ) printf("hello World!\n");

40 // for * #include <stdio.h> int main(void) int x, y; for(y = 0;y < 5; y++) for(x = 0;x < 10; x++) printf("*"); printf("\n"); return 0;

41 #include <stdio.h> int main(void) int s, t; float score, total, average; for(s = 0;s < 20; s++) total = 0; for(t = 0;t < 5; t++) printf("%d % : "); scanf("%f", &score); total += score; average = total / 5.0; printf("%d : %f\n", average); return 0;

43 // break. #include <stdio.h> #include <math.h> int main(void) id) double v; while(1) printf(" : "); scanf("%lf", &v); if( v < 0.0 ) break; printf("%f %f.\n", v, sqrt(v)); return 0;

44 // break. #include <stdio.h> int main(void) float grade, sum = 0.0, average; int count = 0; while(1) printf(" : "); scanf("%f", &grade); if( grade < 0.00 ) break; count++; sum += grade; average = sum / count; printf(" %f.\n", average); return 0;

45 #include <stdio.h> int main(void) int x, y; for(y = 1; y < 10000; y++) for(x = 1; x < 50; x++) if( _kbhit() ) goto OUT; printf("*"); printf("\n"); OUT: return 0;

48 //. #include <stdio.h> int main(void) char letter; while(1) printf(" : "); scanf(" %c", &letter); if( letter == 'Q' ) break ; if( letter < 'a' letter > 'z' ) continue ; letter -= 32; printf(" %c.\n", letter); return 0;

49 // #include <stdio.h> #define RATE 0.07 // #define INVESTMENT // #define YEARS 10 // int main(void) int i; double total = INVESTMENT; // printf("==============\n"); printf(" \n"); printf("==============\n"); ============== ============== for(i = 1; i <= YEARS; i++) total = total * ( 1 + RATE ); // printf("%2d %10.1f\n", i, total); return 0;

50 #include <stdio.h> #define START_DAY 3 // #define DAYS_OF_MONTH 31 // int main(void) id) int day, date; printf("=====================\n"); printf(" \n"); printf("=====================\n"); for(day = 0; day < START_DAY ; day++) // printf(" "); // for(date = 1; date <= DAYS_OF_MONTH ; date++) if( day == 7 ) day = 0; // printf("\n"); day++; printf("%2d ", date); //. printf("\n=====================\n"); return 0;

Microsoft PowerPoint - chap-07.pptx

Microsoft PowerPoint - chap-07.pptx 쉽게풀어쓴 C 언어 Express 제 7 장반복문 컴퓨터프로그래밍기초 이번장에서학습할내용 반복의개념이해 while 반복문 do-while 반복문 for 반복문 break와 continue 문 반복구조는일련의처리를반복할수있게한다. 반복의개념을먼저이해하고 C에서제공되는 3가지의반복구조에대하여학습한다. 컴퓨터프로그래밍기초 2 반복문 Q) 반복구조는왜필요한가? A)