CLA – Programming Essentials in C Quizzes Chapter 5 Assessment Exam Answers Full 100%

Last Updated on May 20, 2021 by Admin

CLA – Programming Essentials in C Quizzes Chapter 5 Assessment Exam Answers Full 100%

1. What happens if you try to compile and run this program?

       #include <stdio.h> 
       int main(void) { 
           char s[10] = "ABCDE", *p = s + 3; 
   
           printf("%d", p[1] - p[-1]); 
           return 0; 
       }

   • the program outputs 1
   • the program outputs 4
   • the program outputs 2
   • the program outputs 3

2. What happens if you try to compile and run this program?

       #include <stdio.h> 
       int main(void) { 
           char s[] = "ABCDE", *p = s + 5; 
       
           printf("%d", p[-1] - *(p - 4)); 
           return 0; 
       }

    

   • the program outputs 3
   • the program outputs 1
   • the program outputs 4
   • the program outputs 2

3. What happens if you try to compile and run this program?

       #include <stdio.h> 
       int main(void) { 
           char *p = "12345", *q = p - 10; 
   
           printf("%d", q[14] - q[13]); 
           return 0; 
       }

    

   • the program outputs 2
   • the program outputs 1
   • the program outputs 3
   • the program outputs 4

4. What happens if you try to compile and run this program?

       #include <stdio.h> 
       int main(void) { 
           int t[] = { 1, 2, 3, 4, 5 }, *p = t; 
   
           *p++; 
           (*p)++; 
           *p++; 
           printf("%d",p[-1]); 
           return 0; 
       }

    

   • the program outputs 1
   • the program outputs 4
   • the program outputs 2
   • the program outputs 3

5. What happens if you try to compile and run this program?

       #include <stdio.h> 
       int main(void) { 
           int t[2][2] = { 1, 2, 4, 8 }; 
           int s = 0, i, j; 
   
           for(i = 2; i; i -= 2) 
           	for(j = 1; j < 2; j += 2) 
           		s += t[i - 1][j]; 
           printf("%d",s); 
           return 0; 
       }

    

   • the program outputs 8
   • the program outputs 2
   • the program outputs 1
   • the program outputs 4

6. What happens if you try to compile and run this program?

       #include <stdio.h> 
       int main(void) { 
           int t[1][2][2] = { { { 1, 2 }, { 3, 4 } } }; 
           int s = 0, i, j, k; 
   
           for(i = 1; i > 0; i -= 2) 
           	for(j = 1; j < 2; j += 2) 
           		for(k = 0; k < 3; k += 3) 
           		s += t[k][i - 1][j]; 
           printf("%d",s); 
           return 0; 
       }

    

   • the program outputs 2
   • the program outputs 3
   • the program outputs 4
   • the program outputs 1

7. What happens if you try to compile and run this program?

       #include <stdio.h> 
       #include <stdlib.h> 
       int main(void) { 
           int *p = (int *)malloc(2 * sizeof(int)); 
           *p = 2; 
           *(p + 1) = *(p) - 1; 
           *p = p[1]; 
           printf("%d",*p); 
           free(p); 
           return 0; 
       }

   • the program outputs 3
   • the program outputs 1
   • the program outputs 2
   • the program outputs 4

8. What happens if you try to compile and run this program?

       #include <stdio.h> 
       #include <stdlib.h> 
       int main(void) { 
           int t[] = { 8, 4, 2, 1 }; 
           int *p = (int *)malloc(sizeof(t)); 
           int i; 
           for(i = 0; i < 4; i++) 
           	p[3 - i] = t[i]; 
           printf("%d",*(p + 2)); 
           free(p); 
           return 0; 
       }

   • the program outputs 3
   • the program outputs 1
   • the program outputs 2
   • the program outputs 4

9. What happens if you try to compile and run this program?

       #include <stdio.h> 
       #include <stdlib.h> 
       int main(void) { 
           int i,j; 
           int **p = (int **)malloc(2 * sizeof(int *)); 
           p[0] = (int *)malloc(2 * sizeof(int)); 
           p[1] = p[0]; 
           for(i = 0; i < 2; i++) 
           	for(j = 0; j < 2; j++) 
           		p[i][j] = i + j; 
           printf("%d",p[0][0]); 
           return 0; 
       }

   • the program outputs 1
   • the program outputs 4
   • the program outputs 2
   • the program outputs 3

10. What happens if you try to compile and run this program?

        #include <stdio.h> 
        #include <stdlib.h> 
        int main(void) { 
            int i,j; 
            int **p = (int **)malloc(2 * sizeof(int *)); 
            p[0] = (int *)malloc(2 * sizeof(int)); 
            p[1] = (int *)malloc(2 * sizeof(int)); 
            for(i = 0; i < 2; i++) 
            	for(j = 0; j < 2; j++) 
            		p[i][j] = i + j; 
            printf("%d",p[0][0]); 
            return 0; 
        }

    • the program outputs 0
    • the program outputs 2
    • the program outputs 3
    • the program outputs 1

11. What happens if you try to compile and run this program?

        #include <stdio.h> 
        int main(void) { 
            int *t[10]; 
            int (*u)[10]; 
            printf("%d",sizeof(t) != sizeof(u)); 
            return 0; 
        }

    • the program outputs 0
    • the program outputs 4
    • the program outputs 1
    • the program outputs 16

12. What happens if you try to compile and run this program?

        #include <stdio.h> 
        int main(void) { 
            int *(t[10]); 
            int *u[10]; 
            printf("%d",sizeof(t) != sizeof(u)); 
            return 0; 
        }

    • the program outputs 3
    • the program outputs 0
    • the program outputs 1
    • the program outputs 2

13. What happens if you try to compile and run this program?

        #include <stdio.h> 
        struct S { 
            int S; 
        }; 
        int main(void) { 
            struct S S; 
            S.S = sizeof(struct S) / sizeof(S); 
            printf("%d",S.S); 
            return 0; 
        }

    • the program outputs 3
    • the program outputs 1
    • the program outputs 4
    • the program outputs 2

14. What happens if you try to compile and run this program?

        #include <stdio.h> 
        #include <string.h> 
        struct Q { 
            char S[3]; 
        }; 
        struct S { 
            struct Q Q; 
        }; 
        int main(void) { 
            struct S S = { '\0', '\0','\0' }; 
            S.Q.S[0] = 'A'; 
            S.Q.S[1] = 'B'; 
            printf("%d",strlen(S.Q.S)); 
            return 0; 
        }

    • the program outputs 4
    • the program outputs 1
    • the program outputs 2
    • the program outputs 3

15. What happens if you try to compile and run this program?

        #include <stdio.h> 
        #include <string.h> 
        struct Q { 
            char S[3]; 
        }; 
        struct S { 
            struct Q Q; 
        }; 
        int main(void) { 
            struct S S = { '\0', '\0','\0' }; 
            S.Q.S[0] = 'A'; 
            S.Q.S[2] = 'B'; 
            printf("%d",strlen(S.Q.S)); 
            return 0; 
        }

    • the program outputs 3
    • the program outputs 4
    • the program outputs 2
    • the program outputs 1

16. What happens if you try to compile and run this program?

        #include <stdio.h> 
        struct Q { 
            int a,b,c; 
        }; 
        struct S { 
            int a,b,c; 
            struct Q Q; 
        }; 
        int main(void) { 
            struct Q Q = { 3,2,1 }; 
            struct S S = { 4,5,6 }; 
            S.Q = Q; 
            printf("%d",S.b - S.Q.b); 
            return 0; 
        }

    • the program outputs 1
    • the program outputs 4
    • the program outputs 2
    • the program outputs 3

17. What happens if you try to compile and run this program?

        #include <stdio.h> 
        #include <stdlib.h> 
        struct S { 
            int 	  a; 
            struct S *b; 
        }; 
        int main(void) { 
            struct S *x = (struct S*) malloc(sizeof(struct S)); 
            struct S *y = (struct S*) malloc(sizeof(struct S)); 
            x->a = 2; 
            x->b = y; 
            y->a = 4; 
            y->b = x; 
            printf("%d",x->b->b->b->a); 
            free(x); free(y);
            return 0; 
        }

    • the program outputs 1
    • the program outputs 4
    • the program outputs 3
    • the program outputs 2

18. What happens if you try to compile and run this program?

        #include <stdio.h> 
        #include <stdlib.h> 
        struct S { 
            int 	  a; 
            struct S *b; 
        }; 
        int main(void) { 
            struct S *x = (struct S*) malloc(sizeof(struct S)); 
            struct S *y = (struct S*) malloc(sizeof(struct S)); 
            struct S *p; 
            x->a = 2; x->b = y; 
            y->a = 4; y->b = x; 
            p = x; 
            p = p->b->b->b->b; 
            printf("%d",p->a); 
            return 0; 
        }

    • the program outputs 2
    • the program outputs 4
    • the program outputs 3
    • the program outputs 1

19. What happens if you try to compile and run this program?

        #include <stdio.h> 
        struct S { 
            int a[2]; 
        }; 
        int main(void) { 
            struct S S[2]; 
            int i; 
            for(i = 0; i < 2; i++) 
            	S[i].a[1-i] = 4 * !i; 
            printf("%d",S[0].a[1]); 
            return 0; 
        }

    • the program outputs 2
    • the program outputs 4
    • the program outputs 1
    • the program outputs 3

20. What happens if you try to compile and run this program?

        #include <stdio.h> 
        struct S { 
            char *p; 
        }; 
        int main(void) { 
            char *p = "abcd"; 
            struct S S[2]; 
            int i; 
            for(i = 0; i < 2; i++) 
            	S[i].p = p + i; 
            printf("%c",S[1].p[0]); 
            return 0; 
        }

    • the program outputs a
    • the program outputs d
    • the program outputs b
    • the program outputs c