In the following code can we declare a new typedef name emp even though struct employee has not been completely defined while using typedef? < Yes / No> typedef struct employee *ptr; struct employee { char name[20]; int age; ptr next; };

Correct Answer: 1 char arr[NUMSLOTS(50)]; 2 SET (arr, 20); 3 if (TEST (arr, 40))

Correct Answer: ffff

Correct Answer: 6

Explanation:

When atoi() tries to convert argv[0] to a number it cannot do so (argv[0] being a file name) and hence returns a zero.

Correct Answer: C: \SAMPLEEXE

Correct Answer: The last line from the file "trial" would be read twice To avoid this, ues: While ( fgets (str, 80, fp) ! = NULL) puts (str);

Correct Answer: typedef struct node * treeptr typedef struct node { int data1; float data2; treeptr *left; treeptr *right; }treenode; treeptr ptr; ptr = ( treeptr ) malloc ( sizeof ( treenode ) );

Correct Answer: #include "alloch" #define MAXROW 3 #define MAXcol 4 main() { int *p, i, J; p = (int *) malloc (MAXROW * MAXCOL * sizeof (int)); for ( i=0; i < MaxROW ; i++) { for (j=0; j < MAXCOL ; j++) { p [ i * MAXCOL + j] = i; printf ( "%d", p [i * MAXCOL + j] ); } printf ("\n"); } }

Correct Answer: for ( i=0; i < MAXROW ; i++) free (p[i]); free (p);

Correct Answer: Yes, using the realloc() function as shown below: main() { int *p; p = ( int *) malloc (20) ; t = p; t = (int *) realloc ( p, 40); if ( t == NULL ) Printf (" Cannot reallocate, leaves previous allocated region unchanged "); else { if ( p ==t ) ; / * the array expanded at the same region */ else { free ( p ); / * deallocate the original array */ p = t; /* set p to newly allocated region */ } } }

Correct Answer: As against malloc(), calloc() needs two arguments, the number of elements to be allocated and the size of each element For example, p = (int *) calloc (10, sizeof (int)); would allocate space for a 10- integer array Additionally, calloc() would also set each of this element with a value 0 Thus the above call to calloc() is equivalent to: p = (int *) malloc (10 * sizeof (int)); memset (p, 0, 10 * sizeof( int ));