FINAL EXAM REVIEW!!

1. FINAL EXAM REVIEW!! Lets play C-eopardy!!! (Answer in the form of answers!!) Feel free to hum along!

2. Arrays Functions & Macros Strings Pointers Loops 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300

3. Question: Given the following: function prototype: void my_func(int array[][3]); variable declaration: int X[2][3]; Which function call can you use to pass a 2-dimensional array to a function? my_func(X); my_func(&X[0][0]); my_func(X[0]);

4. Answer All of them

5. Question What is printed: int a[3][3]={0}, i,j; for(i=0;i<3;i++) for(j=i;j<3;j++) a[i][j]=i*j; for(i=0;i<3;i++) printf(“%d\t”,a[i][1]);

6. Answer 0 1 0

7. Question What is printed: int a[10]={0}, n=27212, abc; while(n>0) { abc=n%10; if(a[abc]) { printf(“%d\t”,abc); break; } a[abc]=1; n/=10; }

8. Answer 2

9. Question Given the following: #define DOUBLE(x) (2*x) What is the output for printf(“%d”,DOUBLE(1+2));

10. Answer 4

11. Question Write the following equation as a C statement using functions from the math.h library. y=(en ln(b))2

12. Answer y=pow(exp(n*log(b)),2);

13. Question Given the following program: main() { int n = 10; printf(“%d”,funct1(n)); } int funct1(int n) { if(n>0) return(n + funct1(n-1)); } What is the o/p ?

14. Answer 55

15. Question Given the following program: #include <stdio.h> #define ROWS 3 #define COLUMNS 4 int z[ROWS][COLUMNS] = {1,2,3,4,5,6,7,8,9,10,11,12}; int main() { int a, b, c; for(a=0;a<ROWS,++a) { c = 999; for(b=0;b<COLUMNS;++b) if(z[a][b] < c) c = z[a][b]; printf(“%d ”,c); } What is the o/p?

16. Answer 1 5 9 (smallest value within each row)

17. Question What is the output of the following code fragment: inti; char x[80] = “gorilla”; char y[80] = “giraffe”; char z[3][80]; strcpy(z[0],y); strcpy(z[1],strcat(x,y)); strcpy(z[2],x); for(i=0;i<3;i++) printf(“%s\n”,z[i]);

18. Answer giraffe gorillagiraffe gorillagiraffe

19. Question What is the final value of string s1? strcpy(s1,"computer"); strcpy(s2,"science"); if(strcmp(s1,s2) < 0) strcat(s1,s2); else strcat(s2,s1); s1[strlen(s1)-6] = '\0';

20. Answer computers

21. Question If ‘i’ is a variable and ‘p’ points to ‘i’, which of the following expression are aliases for ‘i’ ? *p e) *i &p f) &i *&p g) *&i &*p h) &*i

22. Answer a) g)

23. Question Consider following declaration: float table[2][3] = { {1.1, 1.2, 1.3}, {2.1, 2.2, 2.3} }; What is the value of ? *(*(table+1));

24. Answer 2.1

25. Question Given: int x[]={-1,-2,-3,-4}, *px, **ppx; px=x; ppx=&px; Which command will display -3. A: printf(“%d”,**ppx+2); B: printf(“%d”,*(*ppx+2)); C: printf(“%d”,*ppx+2); D: printf(“%d”,*(ppx+2));

26. Answer B

27. Question Given the following: int i=0,n=465; do { n/=10; i++; } while(n>0); printf(“i=%d\n”,i); What is printed?

28. Answer 3

29. Question What is printed: int i=10; while(i-- +2); printf(“%d”,i);

30. Answer -3

31. Question What is displayed by the following code: #include <stdio.h> main() { int i,j,x=0; for (i=0; i<5; ++i) { for(j=0;j<i;++j) x += (i+j-1); printf(“%d”, x); break; } printf(“\nx = %d”,x); }

32. Answer 0 x = 0

34. Arrays Functions & Macros Strings Pointers Loops 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300