Explore topic-wise MCQs in Typedef.

typedef's have the advantage that they obey scope rules, that is they can be declared local to a function or a block whereas #define's always have a global effect.

Are the properties of i, j and x, y in the following program same?

 typedef unsigned long int uli; uli i, j; unsigned long int x, y;

Is there any difference in the #define and typedef in the following code?

 typedef char * string_t; #define string_d char *; string_t s1, s2; string_d s3, s4;

Is the following declaration acceptable?

 typedef long no, *ptrtono; no n; ptrtono p;

In the following code snippet can we declare a new typedef named ptr even though struct employee has not been completely declared while using typedef?

 typedef struct employee *ptr; struct employee { char name[20]; int age; ptr next; }

Point out the error in the following code?

 typedef struct { int data; NODEPTR link; }*NODEPTR;

What will be the output of the program?

 #include typedef struct error {int warning, err, exception;} ERROR; int main() { ERROR e; e.err=1; printf("%d n", e.err); return 0; }

What will be the output of the program?

 #include int main() { typedef float f; static f *fptr; float fval = 90; fptr = &fval; printf("%f n", *fptr); return 0; }

What will be the output of the program?

 #include int main() { typedef int LONG; LONG a=4; LONG b=68; float c=0; c=b; b+=a; printf("%d,", b); printf("%f n", c); retu

What will be the output of the program?

 #include int main() { enum color{red, green, blue}; typedef enum color mycolor; mycolor m = red; printf("%d", m); return 0; }

Which of the following is an example for non linear data type?

Queue data structure works on the principle of ____________

The type of linked list in which the node does not contain any pointer or reference to the previous node is _____________

Which of the following header files must necessarily be included to use dynamic memory allocation functions?

Choose the statement which is incorrect with respect to dynamic memory allocation.

The size of both stack and heap remains the same during run time.

Local variables are stored in an area called ___________

What is typedef declaration?

typedef int (*PFI)(char *, char *)creates ___________

Which of the following may create problem in the typedef program?

Which of the given option is the correct method for initialization?

 typedef char *string;

Which option should be selected to work the following C expression?

 string p = "HELLO";

What will be the output of the following C code?

 #include  typedef struct p { int x, y; }k; int main() { struct p p = {1, 2}; k k1 = p; printf("%d n", k1.x); }

What will be the output of the following C code?

 #include  typedef struct p { int x, y; }; int main() { p k1 = {1, 2}; printf("%d n", k1.x); }

What will be the output of the following C code?

 #include  typedef struct p { int x, y; }k = {1, 2}; int main() { p k1 = k; printf("%d n", k1.x); }

What will be the output of the following C code?

 #include  int *(*(x()))[2]; typedef int **(*ptrfoo)())[2]; int main() { ptrfoo ptr1; ptr1 = x; ptr1(); return 0; } int *(*(x()))[2] { int (*ary)[2] = malloc(sizeof * ary); return &ary; }

We want to create an alias name for an identifier of the type unsigned long. The alias name is: ul. The correct way to do this using the keyword typedef is ____________

Which of the following keywords is used to define an alternate name for an already existing data type?

What will be the output of following program ?

 #include < stdio> int main() { typedef int AAA,BBB,CCC,DDD; AAA aaa=10; BBB bbb=20; CCC ccc=30; DDD ddd=40; printf("%d,%d,%d,%d",aaa,bbb,ccc,ddd); return 0; }

What is x in the following program?

 #include int main() { typedef char (*(*arrfptr[3])())[10]; arrfptr x; return 0; }

In the following code what is 'P'?

 typedef char *charp; const charp P;

In the following code, the P2 is Integer Pointer or Integer?

 typedef int *ptr; ptr p1, p2;

For the following typedef in C, pick the best statement

typedef int INT, *INTPTR, ONEDARR[10], TWODARR[10][10];

What will be the output of the following C code?

 #include  typedef int integer; int main() { int i = 10, *ptr; float f = 20; integer j = i; ptr = &j; printf("%d n", *ptr); return 0; }

What will be the output of the following C code?

 #include  int (*(x()))[2]; typedef int (*(*ptr)())[2] ptrfoo; int main() { ptrfoo ptr1; ptr1 = x; ptr1(); return 0; } int (*(x()))[2] { int (*ary)[2] = malloc(sizeof*ary); return &ary; }

What will be the output of the following C code?

 #include  typedef struct student { char *a; }stu; void main() { struct student s; s.a = "hey"; printf("%s", s.a); }

What will be the output of the following C code?

 #include  typedef struct student { char *a; }stu; void main() { struct stu s; s.a = "hi"; printf("%s", s.a); }

What will be the output of the following C code?

 #include int main() { typedef union a { int i; char ch[2]; }hello; hello u; u.ch[0] = 3; u.ch[1] = 2; printf("%d, %d", u.ch[0], u.ch[1]); return 0; }

One of the major difference between typedef and #define is that typedef interpretation is performed by the _________________ whereas #define interpretation is performed by the _____________

Consider this statement: typedef enum good {a, b, c} hello; Which of the following statements is incorrect about hello?

What is the size of myArray in the code shown below? (Assume that 1 character occupies 1 byte)

 typedef char x[10]; x myArray[5];

We want to declare x, y and z as pointers of type int. The alias name given is: intpt The correct way to do this using the keyword typedef is:

What s the meaning of following declaration in C language?

 int (*p)[5];

Assuming int size is 4 bytes, what is going to happen when we compile and run the following program?

 #include  stdio.h  int main() { printf( GeeksQuizn ); main(); return 0; }

typedef declaration:

What is the output of this C code?

 typedef struct p { int x, y; }k; int main() { struct p p = {1, 2}; k k1 = p; printf("%d n", k1.x); }

typedef which of the following may create problem in the program?

typedef int (*PFI)(char *, char *)creates:

Which of the following is FALSE about typedef?

Which of the given option is the correct method for initialization?
typedef char *string;