1. ???? ????? – ?????? ?' ???"?

2. ??????: ?????? ?? ????? ?????? ?? ????? ?????, ??????? ????? ?? ?? ?? ???? ??? ?? ??????. ???? ?????? ????? ?? ??? ?????? ????? ??? ??? ???. ????? ???? ????? "????". ???? ????? ???? ?????? ???. ????: int A[10]; ??? ??? ???????? ????? ?? ???? ??????, ??? ?-0. ????????? ?? ?? ????? ??? ??-??? ?? ????? ?????? ??????? ?? ?????? (???? ??????? ???????). ????: A[0]=9;

3. ??????: ?????? ?????? ???????? ?????? ????? ??????? ???? ?????? ????? ??? (???? ??? ?? ?? ??? ????????, ?????? ?? ?? ????????, ???"? ?? ?? ???? ???'). ??? ??????, ?????? ?? ?????? ???? ????? ????? ?? ???' ??????? ?? ?????? ?????, ??? ????? ??? ??? ?? ?????? ????/??? ????????? ????? ???? ??????? ?????? ?? ?? ??? ????????.

4. ?????: ????? ?????? ???? ???? #include<stdio.h> int main() { int i, input[10]; printf(“Enter the 10 integers:\n”); for (i=0; i<10; i++) scanf(“%d”, &input[i]); for (i=9; i>=0; i--) printf(“%d”, input[i]); }

5. ?????:????? ??????? ???? ?????? #include<stdio.h> int main() { int i; double scores[10], average, sum=0; printf(“Enter the 10 scores:\n”); for (i=0; i<10; i++) { scanf(“%lf”, &scores[i] ); sum = sum + scores[i]; } average=sum/10; for (i=0; i<10; i++) if (scores[i] > average) printf(“Score number %d is above average\n”, i); }

6. ??????: ?????? ?????? ????? ??????? ?????, ?? ?????? ???? ????? ????????? ????. ??? ??? ?????, ???? ???? (?????) ????? ?????? ??? ?????? ?????? ???? ?? ???????. ???? ??? ????? ?? ????? ???????? ??? ??? ?????? (??? ????) ????????? ?? ?????. int days_in_month[12]={31,28,31,30,31,30,31,31,30,31,30,31}; ?? ???? ????? ???????? ?? ????, ?? ??? ???? ??? ???? ???? ???????. ?????? ???? ????? ??????: int days_in_month[]={31,28,31,30,31,30,31,31,30,31,30,31}; ?? ?????? ?????, ?? ??? ????? ?????? ??? ??? (?? ???? ??? ???? ???? ?? ?? ????? ???????). int counters[10]={0};

7. ??? ???? ??? ????? ???-??? ???? ????? ????? ???? ?? ??????? ??? ??? ?????? ??? ?????. ??-???? ???? ????? ???? ????? ???-???: ???? ??-???? ???? ???-??? ?? ?? ?????, ????? ????? ??? ?"? ?????: for(i=0; i<10; i++) A[i]=0; A=0 ??-???? ?????? ???? ??? ????? ??? ?"? ????? = ?? ???? ?????: for(i=0; i<10; i++) A[i]=B[i]; A=B ?? ?? ???? ?????? ??????, ?????, ???, ???' (????? ?????).

8. ????? ??????? ????? ?? ????? ??? ????? ???? ????? ??????, ??????? ????? ????? ?????? ?? ?????? ?????, ???????? "????". ????: int a[10]; a[10]=0; a[-1]=5;

9. ?????? ??????: ????? ????? ??????

10. ????? ???? ???????? ????? ???? ??? ???? ?????? ?? ???? ???-???, ??? ???? ?????? ?? ?? ????? ????????. ????-??? ????? ???????? ?? ?? ???? ?????, ??? ????????? ??? ?? ????? ?????? ???. ????: sum=calc_sum(array, size); ????? ??????? ?????, ????????? ???? ???????? ??? ?? ????? ?????? ???, ????? ???????? ????? ????? ??????. ???????? ????? ?? ???? ????, ????? ?? ?? ?? ?? ???. ??? ??? ???? ????? ???? ???? ?-[ ] ?????? ????????, ?? ??? ?? ????? ????: int calc_sum(int array[], int size);

11. ?????:??????? ?????? ???? ?? ????? #include <stdio.h> int calc_sum(int arr[], int size) { int i, sum = 0; for(i=0; i<size; i++) sum=sum+arr[i]; return sum; } int main() { int input[10], i; for(i=0; i<10; i++) scanf("%d", &input[i]); printf("The sum is %d\n", calc_sum(input, 10)); return 0; }

12. ????? ???? ???????? ????? ????????? ????? ?? ????? ?????? ???? ??? ?????? ????, ??????? ?? ????? ???????? ???? ?? ????? ?????? ????? ????? ?????? ?????. ????? ?? ?????? ???????? ??? ????? ?????, ????? ?????? ?? ????? ?????? ??????? (?????? ??? ???? ???? ?? ????? ?? ?????? ?? ??????).

13. ?????: ??????? ?????? ???? #include <stdio.h> void zero_array(int arr[], int size) { int i; for(i=0; i<size; i++) arr[i]=0; } int main() { int A[10], i; zero_array(A,10); for(i=0; i<10; i++) printf("%d", A[i]); return 0; }

14. ????? ??????-??: ???? ???? ??-???? ?????? ???? ?????? ????? (const) ???????? ??? ??? ?? ???? ????? ???????. ???? ?? ???? ?????? ???????? zero_array ????? ????? ????? ???: int main() { const int A[10]={1,1,2,3,5,8,13,21,34,55}; int i; zero_array(A,10); return 0; }

15. ????? ???? ???? ???????? ???? ?????? ???? ???? ?? ???????? ?????? ??? ????? ????? ????? ????? (const). ???? ???????? ??? ?????? ?? ?????, ???? ?????? ?? ????? ?????? ?????, ??? ???? ?????? ???? ?? ?????? ??????: void print_array(const int array[ ], size) { int i; for(i=0; i<size; i++) printf(“%d “, array[i]); }

16. ????? ???? ???????? - ?????

17. ??????: ?????? ??-??????? ?????? ????? ????? ???????, ?? ?????? ??????? ?????? ????. ???? ?????? ?????? ???? ???? ??-???: int a[10][100]; ??????? ??? ??????? 10 ?????? ????? 100 ?? ?????? ?????. ??? ???? ???? ??? ?? ?"? ??? ????????, ????: a[5][8]=4;

18. ?????? ??-??????? - ?????? ???? ??? ????? ???????? ?? ????????? ???? ??-?????. ???????? ???? ??? ???? ?? ?????? ??-???????, ???????? ???? ?????? ??? ??? ???. ????: int my_matrix[3][2]={ {1,0}, {0,1}, {1,1} }; ?????? ???? ???? ??? ????? ?????? ??????? (?? ?? ???? ???? ?? ????? ????? ?? ???? ????).

19. ?????: ????? ???? ??-????? void zero_array(int a[100][100]) { int i ,j; for(i=0; i<100; i++) for(j=0; j<100; j++) a[ i ][ j ] = 0; }

20. ?????: ????? ???? ??-????? void zero_array(int a[ ][100], int size1) { int i ,j; for(i=0; i<size1; i++) for(j=0; j<100; j++) a[ i ][ j ] = 0; }

21. ?????: ?????? ?????? ??-??????? int compare_arrays10(int a[10][10], int b[10][10]) { int i, j, identical=1; for(i=0; i<10; i++) for(j=0; j<10; j++) if (a[ i ][ j ] != b[ i ][ j ]) identical=0; return identical; }

22. ?????? ??-??????? ??????

24. ??????? ?????? ??? ??? ????? ??? ?????? ????? (???? ???? ?? ????). ?????? ?????? ??????? ????? ????? ???? ????? ?? ?????. ????: char word[20]; ??? ????? ????? ????? ??????? ?? ?????? ???-???, ??? ?? ????? ?? ????? (???? ????? ???? ???-??? ??? ??-??). ???-??, ?????? ???? ???? ??????? ?? ???? ???? (???? ????? ????? ???? ???? ???? ????? ?????). ???? ???? ?????? ?????????-????? ???? ????? ?????? ????? ????? ?? ???????, ???????? ?????? ?? ?????? ????.

25. ??????? – ?????? ??????, ?? ??? ???? ????? ????? ???? ?????? ?????? (????? ????? ?? ?????? ??????? ???????): char message[ ]=“Hello world!”; ???? ?? ???????? ??? ??????? ??????, ??? ??????? ?????? ??? ?????? ???? ?? ????. (????? ????? ????? ?????? ????? ???? ???? ?"? ?????? ??????).

26. ??????? - ?????? ????? ???????. ????? ??? ???????. ???/??? ?? ???????. ?????? ?? ???????.

27. ????? ??? ??????? ?? ???? ?? ????? ????? ??????, ?? ?? ?????? ????? ???? ???? ??????? ????? ??? ‘\0’ (??? ??? ????? 0 ?????(. ??? ?????? ?????, ?? ????? ????? ?????? ?? ?????? ??? ???? ???? ?? ????? (???? ??????? ??? ??? ?????? ???????? ???????). ?? ??????? ??? ??????? ???????? ??????? ???? ???????.

28. ??????? – ????? ??? ??????? ?? ??????? ????? ?? ??????? ?????? ????? ?????? ??????? ??? ?? ?? ?????. ???? ????? ??????? ???: char word[]=“HELLO”; ????? ?????? ??????? ???: char word[]={‘H’,’E’,’L’,’L’,’O’,’\0’}; (????? ?????? ????? 5 ????? ???? ?? 6 ?????).

29. ??????? – ?? ???? ?? ???? ??? ???? ?? ????? ??? ?? ?????, ?????? ?????? ???? ?????? ?? ??????? (????? ?????), ?? ????? ?????? ?? ??? '0\' ???? ???????. ???? ?? ????? ?????? ??????? ?? ??????? ???? ?????: char word[6]={‘H’,’E’,’L’,’L’,’O’}; ?? ????? ?????: word[5]=‘\0’;

30. ?????: ????? ???? ?????? ???????? ???? ????? ?????? ??????? ?? ????? ???, ?????? ?? ?? ??? ?? '0\' ???? ???????. int my_strlen(char str[]) { int i=0; while (str[ i ] != ‘\0’) i++; return i; }

32. ???/??? ?? ??????? ???? ????? ??????? ?? ???? ??????? ??? ??? ?? ????? scanf, printf ?? ????? (?? ????? getchar,putchar). ??????, ???? ??? ???? ???? ????? 200 ????? ??? ?????, ?????? ?? ????? ?????-???? (??? ????? ????? ????? ???????): char answer[201]; int i=0; do { scanf(“%c”, &answer[i]); i++; } while ((answer[i-1]!=‘\n’) && (i<200)) answer[i]=‘\0’;

33. ???/??? ?? ?????? ???? ???? ?? ????? ??????? ??????? ???-??? ?- scanf, printf ??????? ?????? %s. ????: char answer[100]; scanf(“%s”, answer); ???? ???? ?? ?? ???? ?? ?????-???? (????? ?? ??? ????? ?????). ??? ‘\0’ ????? ???????? ?"? ?- scanf ???? ???? ??????? ??????. ???? ?? ??? ?????? ?? ????? & ?- scanf ?? ?????? ????.

34. ??? ?? ?????? ???? – ??' ?????? ?? ????? ???? ?????? ????? ???? ?????? ??????? ?????, ?? ??????? ????? "????", ?? ???? ???? ????? ???? ??????? ??????? ??. (????? ?? ????? ?????? ???? ??? ??? ?????). ?? ????? ?????? ?? ???? ?????? ?????? ?? ???? ????? ?? ?? ?- scanf. ????: scanf(“%40s”, answer); ??? ???? ?????? ???? ?????? ??? ????? ????? ?????? ??-?? ??? ?????? ???? (?? ???? ?? ???? ???????? ?????).

35. ??? ?? ?????? ???? printf(“%s”, answer) ????? ?? ???? ??????? answer ?? ??? '0\'. HELLO ?? ????? ??? ?? '0\' ???? ???????, ?? printf ????? ?? ?? ?? ??? ???? ??????? ???????, ?? ????? ????? ??? ‘\0’ (????? ????? ???? ??????? ??? ???? ???? ?? ?????). ????: HELLO3894o9fhsdughw34oruvhjnxuioghyw89tpcvj

36. ??? ?????? ????/??? ?? ??????? ?? ????? ??? ????? ????????: gets(str); ????? ?? ??????. ??? ?????? ???? ?? ???? ?????? ?? ???? ????, ?? ?? ?????? ????? ???? ???? ????? ??????? "????". ?? ?? ????? ??? ?????: puts(str); ?????? ??? printf(“%s\n”,str) (?????? ????? ???? ???? ???????).

38. ?????: ?????? ??????? ???? #include<stdio.h> int main() { char word[30], spaced_word[60]; int i=0; scanf(“%29s”, word); while (word[i] != ‘\0’) { spaced_word[ i*2 ] = word[i]; spaced_word[ i*2+1 ] = ‘ ’; i++; } spaced_word[i*2-1] = ‘\0’ ; printf(“The word after spacing: %s\n”, spaced_word); }

39. ?????: ?????? ??????? ???? #include<stdio.h> int main() { char word[30], spaced_word[60]; int i=0; scanf(“%29s”, word); while (word[i] != ‘\0’) { spaced_word[ i*2 ] = word[i]; spaced_word[ i*2+1 ] = ‘ ’; i++; } spaced_word[i*2-1] = ‘\0’ ; printf(“The word after spacing: %s\n”, spaced_word); }

41. ?????? ?? ??????? ?? ???? ???? ?????? ?? ?????? ???? ??? ?????? ?? ???? ????? ????: string1==string2 string1=string2 ?? ?????? ???? ??? ???? ?? ??????? ???? ?? ?????? ???????, ???? ?? ??????? ???? ?????? ?? ??????? ??? ?? ???? ???????. ?????? ?????? ?? ??????? ????? ???? ?????? ?????? string.h, ?????? ?????? ??? ?????? ???????, ????? ???????, ????? ?????? ??????? ???? ("??????"), ????.

42. ?????? string.h – ???????? ?????? ????? ???? ??????? (??? ???? ??? '0\'): int strlen(const char str[ ]); (????? ?? ???? ?? ?-'0\') ?????? ???????: int strcmp(const char str1[ ], const char str2[ ]); ??? ????? ??? ???????? ?????? ??????????? (??? ??? ??????, ??? ????-?????), ??????? 0 ?? ?? ????, ??' ????? ?? ??????? ????? ????, ??' ????? ?? ????? ????? ????.

43. - ??? ?? ?????string.h ?????? ????? ???? ?? ???? ?? ???????? ????? ??????, ??? ??????? ?? ?? ??? '0\' ???? ?? ??????. ????? ???? ?????? ???????: int my_strcmp(char str1[], char str2[]) { int i=0, same=0; while ( (str1[i] == str2[i]) && (str1[i] != ‘\0’) ) i++; if (str1[i] < str2[i]) same=-1; else if (str1[i] > str2[i]) same=1; return same; }

44. ?????: ?? ???? ??????? ????? #include<stdio.h> #include<string.h> int main() { int bush_votes = 0 , kerry_votes=0; char vote[6]; while(1) { scanf(“%5s”, vote); if (strcmp(vote, “Bush”)==0) bush_votes++; else if (strcmp(vote, “Kerry”)==0) kerry_votes++; else if (strcmp(vote, “Stop”)==0) break; else printf(“Wrong vote!\n”) } printf(“Bush received %d votes and Kerry received %d votes\n”, bush_votes, kerry_votes); }

45. - ??????? ??????string.h ????? ?????? ??????? ???? ????? ??-???: strcpy(char target [], const char source[]); ?????? ??????? (????? ?? str2 ???? str1): strcat(char str1[], const char str2[]); ????? ?????? ??????? ?? ?? ???????: strchr(const char str[], char c); ????? ?????? ??????? ?? ?????? ??????? ????: strstr(const char str[], const char find[]); ????? ???? ???? ?? ?????? ??????? ???? ??? ?????? ?????? ?????? ????.

46. ??? ?????? ???????? ?? ??????? ?????? stdlib.h ?? ???????? ?????? ?????? ????? ??? ?? ????. int atoi(const char str[]); double atof(const char str[]); ????: num=atoi(“12345”); ?? ?????? ???????? ????? ?????? ?????? ????? ?????? ???? ???? ????? ????? ?? ??????? ??????? ???????. ?? ?????? ?? ????? – ???????? ?? ?????? (????????? ????? ??? ?????? ?????? ?????).

47. ?????? ???????? ?? ????? ??????ctype.h ??????? ???????? ?? ????? (??????? ??? ???? ?? ?????? ???? ??? ?? ?? ????). ????: int isalpha(char c); int islower(char c); int isupper(char c); int isdigit(char c); char tolower(char c); char toupper(char c); (?? tolower ?? ????? ??? ????? ?? ??? ?? ???? ????, ??? ?? ?? toupper ?? ????? ??? ????). - ?? ?????? ?????? ???????? ?? ???????.

48. ????? ??????-??: ??????? ??? ??????? ??? ?????? ?????? ???? ???? ??? ?????. ????: ‘a’ ??? ??????? ??????? ?????? ???? ?????? ??????. ????: “HELLO” ?? ?????? “a” ?? ??????? ??? ?????? ??? ?? ?? ??? ‘a’ ?????? ?? ??? ‘\0’. ????? ?? ???? ???? ????? ‘a’. ?? ??????? ?????? ?? ??????? ???? ?????? ?? ?????? ??????, ????: strcmp(input,”a”) ???: strcmp(input,’a’)

49. ??????? - ????? ?????? ??: ????? ???????. ????? ??? ???????. ???/??? ?? ???????. ?????? ?? ???????.