Arrays of Structures Quiz Online Practice Test

1. What is the correct syntax to access the member of the ith structure in an array of structures defined as follows?
struct temp
{
int b;
} s[50];

2. What can be said about the output of the following C code?
#include <stdio.h>
struct temp
{
int a;
int b;
int c;
};
main()
{
struct temp p[] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
}

3. Which of the following utilizes structures?

4. What is the correct syntax to declare a function `foo()` that receives an array of structures as an argument?

5. What will be the output of this C program? (Assuming the size of `int` is 4)
#include <stdio.h>
struct temp
{
int a;
int b;
int c;
} p[] = {0};
main()
{
printf("%d", sizeof(p));
}

6. What will be the output of this C code?
#include <stdio.h>
struct student
{
char *name;
};
struct student s[2];
void main()
{
s[0].name = "alan";
s[1] = s[0];
printf("%s%s", s[0].name, s[1].name);
s[1].name = "turing";
printf("%s%s", s[0].name, s[1].name);
}

7. What will be the output of this C program?
#include <stdio.h>
struct student
{
char *name;
};
struct student s[2], r[2];
void main()
{
s[0].name = "alan";
s[1] = s[0];
r = s;
printf("%s%s", r[0].name, r[1].name);
}

8. What will be the output of the following C code?
#include <stdio.h>
struct student
{
char *name;
};
void main()
{
struct student s[2], r[2];
s[1] = s[0] = "alan";
printf("%s%s", s[0].name, s[1].name);
}

9. What will be the output of this C program?
#include <stdio.h>
struct student
{
};
void main()
{
struct student s[2];
printf("%d", sizeof(s));
}

10. What will be the output of the following C code?
#include <stdio.h>
struct point
{
int x;
int y;
};
void foo(struct point*);
int main()
{
struct point p1[] = {1, 2, 3, 4};
foo(p1);
}
void foo(struct point p[])
{
printf("%d\n", p[1].x);
}

11. What will be the output of this C program?
#include <stdio.h>
struct point
{
int x;
int y;
};
void foo(struct point*);
int main()
{
struct point p1[] = {1, 2, 3, 4};
foo(p1);
}
void foo(struct point p[])
{
printf("%d\n", p->x);
}

12. What will be the output of the following C code?
#include <stdio.h>
struct point
{
int x;
int y;
};
void foo(struct point*);
int main()
{
struct point p1[] = {1, 2, 3, 4};
foo(p1);
}
void foo(struct point p[])
{
printf("%d %d\n", p->x, ++p->x);
}

13. What will be the output of the following C code?
#include <stdio.h>
struct point
{
int x;
int y;
} p[] = {1, 2, 3, 4, 5};
void foo(struct point*);
int main()
{
foo(p);
}
void foo(struct point p[])
{
printf("%d %d\n", p->x, p[2].y);
}

14. What will be the output of the following C code?
#include <stdio.h>
struct point
{
int x;
int y;
};
void foo(struct point*);
int main()
{
struct point p1[] = {1, 2, 3, 4, 5};
foo(p1);
}
void foo(struct point p[])
{
printf("%d %d\n", p->x, p[3].y);
}

15. What will be the output of the following C code?
#include <stdio.h>
struct point
{
int x;
int y;
};
void foo(struct point*);
int main()
{
struct point p1[] = {1, 2, 3, 4, 5};
foo(p1);
}
void foo(struct point p[])
{
printf("%d %d\n", p->x, (p + 2)->y);
}

16. Determine the output of the following C code snippet:
#include <stdio.h>
struct point
{
int x;
int y;
};
void foo(struct point*);
int main()
{
struct point p1[] = {1, 2, 3, 4, 5};
foo(p1);
}
void foo(struct point p[])
{
printf("%d %d\n", p->x, (p + 2)->y);
}

17. What will be the output of the following C code when executed on a 64-bit system?
#include <stdio.h>
struct student
{
char *c;
};
void main()
{
struct student s[2];
printf("%d", sizeof(s));
}