Recent questions tagged c-int

Description : String Processing --- Write out a function that prints out all the permutations of a string. For example, abc would give you abc, acb, bac, bca, cab, cba.

Last Answer : void PrintPermu (char *sBegin, char* sRest) { int iLoop; char cTmp; char cFLetter[1]; char *sNewBegin; char *sCur; int iLen; static int iCount; iLen = strlen(sRest); if (iLen == 2) { iCount++; ... printf("\nEnter a string:"); scanf("%s%*c",sIn); memset(s,0,255); PrintPermu(s, sIn); }

Description : "union" Data Type What is the output of the following program? Why?

Last Answer : #include main() { typedef union { int a; char b[10]; float c; } Union; Union x,y = {100}; x.a = 50; strcpy(x.b,"hello"); x.c = 21.50; printf("Union x : %d %s %f n",x.a,x.b,x.c); printf("Union y : %d %s %f n",y.a,y.b,y.c); }

Description : Linked Lists -- Can you tell me how to check whether a linked list is circular?

Last Answer : Create two pointers, and set both to the start of the list. Update each as follows: while (pointer1) { pointer1 = pointer1->next; pointer2 = pointer2->next; if (pointer2) pointer2=pointer2->next ... before pointer1, or the item before that. Either way, its either 1 or 2 jumps until they meet.

Last Answer : Size of the final executable can be reduced using dynamic linking for libraries.

Description : printf() Function- What is the difference between "printf(...)" and "sprintf(...)"?

Last Answer : sprintf(...) writes data to the character array whereas printf(...) writes data to the standard output device.

Description : malloc() Function- What is the difference between "calloc(...)" and "malloc(...)"?

Last Answer : 1. calloc(...) allocates a block of memory for an array of elements of a certain size. By default the block is initialized to 0. The total number of memory allocated will be (number_of_elements * ... calls malloc(...) in order to use the C+ + _set_new_mode function to set the new handler mode.

Description : What is the output of printf("%d")?

Last Answer : 1. When we write printf("%d",x); this means compiler will print the value of x. But as here, there is nothing after ï ½%dï ½ so compiler will show in output window garbage value. 2. When we ... an error without the proper number and type of arguments for things like printf(...) and scanf(...).

Description : What is C language?

Last Answer : The C programming language is a standardized programming language developed in the early 1970s by Ken Thompson and Dennis Ritchie for use on the UNIX operating system. It has since spread to ... language for writing system software, though it is also used for writing applications. ...