Recent questions tagged c-programming

Assume:$\texttt{short = 2 bytes}$, $\texttt{int = 4 bytes}$, $\texttt{char = 1 byte}$$\texttt{int}$ needs $4$-byte alignment and the final structure size is rounded to a ...

Assume:struct Student { double gpa; }; struct Student alice; struct Student *sptr = &alice;Which of the following correctly assigns $\texttt{4.0}$ to $\texttt{alice.gpa}$...

Consider the following code idea from the source:typedef struct { double x, y; } Point; void reset(Point p) { p.x = p.y = 0; } int main() { Point a = {12.0, 42.0}; Point ...

What is printed by the following program?#include <stdio.h struct Student { int id, year; char grade; }; int main() { struct Student s; s.id = 10001; s.year = 2010; s.gra...

Which option correctly completes the given exercise?#include <stdio.h /* define the person struct here using the typedef syntax */ int main() { person john; john.name = "...

What is the output of the following code?#include <stdio.h void func(int a, int *bptr) { a = 42; *bptr = 42; return; } int main(void) { int x = 100, y = 100; func(x, &y);...

Consider the macro:#define square(x) (x*x)Now consider the statement:c = square(a + b);After macro expansion, which expression is produced?$\texttt{c = ((a + b) * (a + b)...

Consider the statement:double ans = 18.0 / squared(2 + 1);For each of the following macro definitions, find the value of $\texttt{ans}$.#define squared(x) x*x #define squ...

What does the following code do?#include <stdio.h int main() { char c; while ((c = getchar()) != EOF) { if (c >= 'A' && c <= 'Z') c = c - 'A' + 'a'; putchar(c); } return ...

Consider the following program:#include <stdio.h int main(void) { char ch; printf("Enter your input: "); while ((ch = getchar()) != 'C') { putchar(ch); } return 0; }For t...

Assume:$\texttt{char}$ takes $1$ byte $\texttt{int}$ takes $4$ bytes $\texttt{int}$ must be stored at an address divisible by $4$ Structure size is rounded to a multiple ...

What is the output of the following code?#include <stdio.h struct Book { char name[4]; int pages; }; int main() { struct Book b1 = {"CAT", 50}; struct Book b2; b2 = b1; b...

What is the output of the following code?#include <stdio.h struct Item { int code; int price; }; void f(struct Item x) { x.code = x.code + 1; x.price = x.price + 50; } vo...

What is the output of the following code?#include <stdio.h struct Student { int roll; int marks; }; int main() { struct Student s[3] = { {1, 50}, {2, 60}, {3, 70} }; stru...

What will happen when the following code is compiled?#include <stdio.h struct Node { int data; }; int main() { struct Node n = {25}; struct Node *p = &n; printf("%d", *p....

What will happen when the following code is compiled?#include <stdio.h struct Point { int x; int y; }; int main() { struct Point p1 = {2, 4}; struct Point p2; p2 = p1; p2...

What is the output of the following code?#include <stdio.h struct Item { int code; int price; }; void update(struct Item *p) { p->price = p->price + 20; (*p).code = (*p)....

What is the output of the following code?#include <stdio.h struct Box { int width; int height; }; int main() { struct Box b = {4, 6}; struct Box *p = &b; p->width = p->wi...

What is the output of the following code?#include <stdio.h struct Student { int roll; int marks; }; int main() { struct Student s[3] = { {1, 70}, {2, 80}, {3, 90} }; s .m...

What is the output of the following code?#include <stdio.h struct Book { char name; float price; int pages; }; int main() { struct Book b1 = {'C', 150.5, 300}; b1.pages =...

What is the main issue in the following code? Assume both $\texttt{malloc()}$ calls succeed.#include <stdio.h #include <stdlib.h int main() { int *p = (int *)malloc(sizeo...

What will happen in the following code?#include <stdio.h #include <stdlib.h int main() { int *p = (int *)malloc(sizeof(int)); *p = 10; free(p); printf("%d", *p); return 0...

What is the output of the following code? Assume $\texttt{malloc()}$ succeeds.#include <stdio.h #include <stdlib.h int main() { int *p = (int *)malloc(3 * sizeof(int)); p...

What is the output of the following code?#include <stdio.h int main() { int x = 25; void *p = &x; printf("%d", *(int *)p); return 0; }$\texttt{25}$ Address of $\texttt{x}...

Which of the following correctly describes the declarations?int *a[10]; int (*p)[5];$\texttt{a}$ is a pointer to an array of $10$ integers, and $\texttt{p}$ is an array o...

What is the output of the following code?#include <stdio.h int main() { int a[3] = { {1, 2}, {3, 4}, {5, 6} }; int (*p) = a; p++; printf("%d %d %d", (*p)[0], *(*(p + 1)...

What is the output of the following code?#include <stdio.h int main() { int a [3] = { {2, 4, 6}, {8, 10, 12} }; printf("%d %d %d", a , *(*(a + 1) + 1), *(*a + 2)); retur...

What is the output of the following code?#include <stdio.h void update(int q, int *r) { q = q + 5; *q = r; q = q + 2; } int main() { int x = 3, y = 8; int *p = &x; u...

What is the output of the following code?#include <stdio.h int main() { int a = 5, b = 9; int *p = &a; int q = &p; *p = *p + 2; *q = &b; q = q + 3; printf("%d %d %d", ...

What is the output of the following code?#include <stdio.h int main() { int x = 10; int *p = &x; int q = &p; q = q + 4; *p = *p + 1; printf("%d %d", x, q); return 0; ...