Top C Projects & Source Codes!!!!

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Top C Projects & Source Codes!!!!
United States	2007-07-24 00:08:27
www.CoolInterview.com - World's Largest Free Interview Questions Website Top 100 C Questions Asked in Actual Interviews What will be the output of the following program in UNIX OS with CC compiler and TC compiler? int main() { int i=5; printf("n%d" ,++i + ++i + ++i + ++i + ++i ); } If any difference then Why it is difference? http://www.coolinterview.com/interview/5966 What is a null pointer? http://www.coolinterview.com/interview/6064 main() { if (!(1&&amp;0)) { printf("OK I am done."); } else { printf("OK I am gone."); } } http://www.coolinterview.com/interview/6010 main() { char *a = "Hello "; char *b = "World"; clrscr(); printf("%s", strcpy(a,b)); } http://www.coolinterview.com/interview/5995 What is a NULL Macro? What is the difference between a NULL Pointer and a NULL Macro? http://www.coolinterview.com/interview/5956 How can i find size of a variable without using sizeof() operator? http://www.coolinterview.com/interview/5969 Write a program which accepts a filename as a command line argument and reverses the contents of the file( ie first character becomes the last character of the file and so on) Input: The program takes the file name whose content should be reversed. Output: The program reverses the contents of the file. http://www.coolinterview.com/interview/5941 fibbonaci series program http://www.coolinterview.com/interview/< wbr>10835 I want C program code for : Reverse the links of a linked list by traversing only once Input: The input consists of the information in each node of the linked list. Output: The program displays the information in the linked list after the links are reversed. Sample Input: Enter the information in the linked list (Enter -1 to exit): 10 20 30 40 50 -1 Sample Output: After the links are reversed Information in the linked list: 50 40 30 20 10 http://www.coolinterview.com/interview/5943 How to remove duplicate elements from an array http://www.coolinterview.com/interview/5963 What is the difference between #include and #include “file”? http://www.coolinterview.com/interview/6062 How argc and argv works in the following main function? main(int argc,char *argv[]) { int n,i=0; while(argv[1][i]!='\0') { n=fun(); i++;} printf( http://www.coolinterview.com/interview/5975 How do you print only part of a string? http://www.coolinterview.com/interview/1012 How to type a string without using printf function? http://www.coolinterview.com/interview/5940 What are the characteristics of arrays in C? http://www.coolinterview.com/< wbr>interview/974 What are the advantages of auto variables? http://www.coolinterview.com/interview/978 What is the quickest searching method to use? http://www.coolinterview.com/interview/1044 What is the differece between #define and constant in C? http://www.coolinterview.com/interview/5953 Why should I prototype a function? http://www.coolinterview.com/interview/990 Is it acceptable to declare/define a variable in a C header? http://www.coolinterview.com/interview/1052 What is the difference between goto and longjmp() and setjmp()? http://www.coolinterview.com/interview/10 64 What is a function and built-in function? http://www.coolinterview.com/interview/971 Differentiate between a linker and linkage? http://www.coolinterview.com/interview/975 What is a macro, and how do you use it? http://www.coolinterview.com/interview/1 033 what is a modulus operator? What are the restrictions of a modulus operator? http://www.coolinterview.com/interview/983 What is pointer? http://www.coolinterview.com/interview/6043 What is a pointer value and address? http://www.coolinterview.com/intervie w/966 What is a pointer variable? http://www.coolinterview.com/interview/965 How can I sort things that are too large to bring into memory? http://www.coolinterview.com/interview/1046 What is a static function? http://www.coolinterview.com/interview/ 989 What is storage class and what are storage variable ? http://www.coolinterview.com/interview/979 When is a switch statement better than multiple if statements? http://www.coolinterview.com/interview/1065 When should a type cast not be used? http://www.coolinterview.com/interview/1053 How can type-insensitive macros be created? http://www.coolinterview.com/interview/1021 What is a void pointer? http://www.coolinterview.com/interview/1008 main() { int i =10, j = 20; clrscr(); printf("%d, %d, ", j-- , --i); printf("%d, %d ", j++ , ++i); } http://www.coolinterview.com/interview/6002 What are advantages and disadvantages of external storage class? http://www.coolinterview.com/interview/976 What is a static function? http://www.coolinterview.com/interview/6068 What is an argument ? differentiate between formal arguments and actual arguments? http://www.coolinterview.com/interview/970 What is the difference between a string and an array? http://www.coolinterview.com/interview/984 What is the difference between a string and an array? http://www.coolinterview.com/interview/6073 In the following code, what is p2? typedef int* ptr ptr p1, p2; http://www.coolinterview.com/interview/6020 In the following code, what is p2? typedef int* ptr ptr p1, p2; http://www.coolinterview.com/interview/6022 Diffenentiate between an internal static and external static variable? http://www.coolinterview.com/interview/977 What is an lvalue? http://www.coolinterview.com/interview/1063 Array is an lvalue or not? http://www.coolinterview.com/interview/1062 What would be the output of the following program? main() { int i=4; switch(i) { default: printf("n A mouse is an elephant built by the Japanese"); case 1: printf(" Breeding rabbits is a hair raising experience"); break; case 2: printf("n Friction is a drag"); break; case 3: printf("n If practice make perfect , then nobody's perfect"); } } http://www.coolinterview.com/interview/6013 viii) main() { char *p; printf("%d %d ",sizeof(*p),sizeof(p)); } http://www.coolinterview.com/interview/6046 If the following program (myprog) is run from the command line as myprog 1 2 3, What would be the output? main(int argc, char *argv[]) { int i,j=0; for(i=0;i< } printf(?%d?,j); atoi(argv[i]); j="j+"> http://www.coolinterview.com/interview/6018 main() { { unsigned int bit=256; printf("%d", bit); } { unsigned int bit=512; printf("%d", bit); } } http://www.coolinterview.com/interview/6006 Point out error, if any, in the following program main() { int i=1; switch(i) { case 1: printf("nRadioactive cats have 18 half-lives"); break; case 1*2+4: printf("nBottle for rent -inquire within"); break; } } http://www.coolinterview.com/interview/6012 main() { int i; clrscr(); for(i=0;i&lt;5;i++) { printf("%dn", 1L << i); } } http://www.coolinterview.com/interview/6007 union u { struct st { int i : 4; int j : 4; int k : 4; int l; }st; int i; }u; main() { u.i = 100; printf("%d, %d, %d",u.i, u.st.i, u.st.l); } http://www.coolinterview.com/interview/5984 main() { signed int bit=512, i=5; for(;i;i--) { printf("%dn", bit = (bit >> (i - (i -1)))); } } http://www.coolinterview.com/interview/6008 iii) main() { float me = 1.1; double you = 1.1; if(me==you) printf("I love U"); else printf("I hate U"); } http://www.coolinterview.com/interview/6049 main() { int c = 5; printf("%d", main||c); } http://www.coolinterview.com/interview/5999 const int perplexed = 2; #define perplexed 3 main() { #ifdef perplexed #undef perplexed #define perplexed 4 #endif printf("%d",perplexed); } http://www.coolinterview.com/interview/5991 void main () { int x = 10; printf ("x = %d, y = %d", x,--x++); } http://www.coolinterview.com/interview/6001 main() { signed int bit=512, i=5; for(;i;i--) { printf("%dn", bit >> (i - (i -1))); } } http://www.coolinterview.com/interview/6009 If the following program (myprog) is run from the command line as myprog friday tuesday sunday, What would be the output? main(int argc, char*argv[]) { printf("%c",**++argv); } http://www.coolinterview.com/interview/6027 main() { char *p = "hello world"; p[0] = 'H'; printf("%s", p); } http://www.coolinterview.com/interview/5988 What does it mean when a pointer is used in an if statement? http://www.coolinterview.com/interview/1006 If we develop a project in C, then how can we create an exe file of it? http://www.coolinterview.com/interview/10840 Where are the auto variables stored? What is the use of register variables? http://www.coolinterview.com/interview/5955 What does it mean- a[i]=i+;i http://www.coolinterview.com/interview/5948 If the following program (myprog) is run from the command line as myprog monday tuesday wednesday thursday What would be the output? main(int argc, char *argv[]) { while(--argc >0) printf("%s",*++argv); } http://www.coolinterview.com/interview/6019 Is it better to use malloc() or calloc()? http://www.coolinterview.com/interview/1001 How can I sort a linked list? http://www.coolinterview.com/interview/1042 Between a long pointer and a char pointer , which one consumes more memory? explain http://www.coolinterview.com/interview/5949 What is the difference between declaring a variable and defining a variable? http://www.coolinterview.com/interview/6058 How can I make sure that my program is the only one accessing a file? http://www.coolinterview.com/interview/1035 If compiler for c is written in c language, which is used to complie the compiler? http://www.coolinterview.com/interview/6041 c is a structural or highlevel or middle level language which one is correct answer http://www.coolinterview.com/interview/5972 How to improve my c knowledge........ http://www.coolinterview.com/interview/5946 main(int argc, cha r *argv[]) { (main && argc) ? main(argc-1, NULL) : return 0; } http://www.coolinterview.com/interview/5980 What would be the output of the following program? main() { int y=128; const int x=y; printf("%d",x); } http://www.coolinterview.com/interview/6021 What would be the output of the following program? main() { int y=128; const int x=y; printf("%d",x); } http://www.coolinterview.com/int erview/6023 What would be the output of the following program? main() { char near * near *ptr1; char near * far *ptr2; char near * huge *ptr3; printf("%d %d %d",sizeof(ptr1),sizeof(ptr2),sizeof(ptr3)); } http://www.coolinterview.com/interview/6025 If the following program (myprog) is run from the command line as myprog friday tuesday sunday, What would be the output? main(int argc, char *argv[]) { printf("%c",*++argv[1]); } http://www.coolinterview. com/interview/6028 In c , main() is a function . and where is defined main() in c. bcz every function has three parts. 1>. decleration 2>. definition. 3>. calling http://www.coolinterview.com/interview/5951 What is the difference between declaring a variable and defining a variable? http://www.coolinterview.com/interview/1051 x) main() { printf("%x",-1<&lt;4); } http://www.coolinterview.com/interview/6044 How do display the list in single linked list form last to first http://www.coolinterview.com/interview/10836 union u1 { int i; char c; }u2; u2.i=32767; u2.c='a'; now the i value gets replaced. If we want to know the data that is saved in the union..internally, without knowing what values that we are using in the prog. that is if just want to know whether a union currently holds an int or a char? If it is a combination of both int and char..we must know even that. and the memory loc ations at which this data is stored? http://www.coolinterview.com/interview/5965 All the programs are tested under Turbo C/C++ compilers. It is assumed that, „« Programs run under DOS environment, „« The underlying machine is an x86 system, „« Program is compiled using Turbo C/C++ compiler. The program output may depend on the information based on this assumptions (for example sizeof(int) == 2 may be assumed). Predict the output or error(s) for the following: i) void main() { int const * p=5; printf("%d",++(*p)); } http://www.coolinterview.com/interview/6050 How many levels deep can include files be nested? http://www.coolinterview.com/interview/1022 What is an lvalue? http://www.coolinterview.com/interview/6056 Which expression always return true? Which always return false? http://www.coolinterview.com/interview/980 Following declarations are same const char *s; char const *s; http://www.coolinterview.com/interview/6024 How reliable are floating-point comparisons? http://www.coolinterview.com/interview/1056 How can you determine the maximum value that a numeric variable can hold? http://www.coolinterview.com/interview/1055 What is the difference between #include&lt; > and #include" " http://www.coolinterview.com/interview/6040 How to find a given number is armstrong number or not in "c".? http://www.coolinterview.com/interview/10839 How to convert Stack in to Queue and v varsa ? c with data structure. http://www.coolinterview.com/interview/6032 How to perform matrix multiplication using Double linked lists? http://www.coolinterview.com/interview/6042 1.WRITE A 'C' PROGRAM TO READ THE AGE OF 100 PERSONS AND COUNT THE NUMBER OF PERSONS IN THE AGE GROUP 50 TO 60.USE FOR LOOP AND CONTINUE STATEMENTS.(10 MARKS) 2.WRITE A PROGRAM TO READ A POSITIVE INTEGER AND PRINT ITS BINARY EQUIVALENT.(10 MARKS) 3.GIVEN TWO ONE DIMENSIONAL ARRAYS A AND B WHICH ARE SORTED IN ASSCENDING ORDER.WRITE A PROGRAM TO MERGE THEM INTO A SINGLE SORTED ARRAY ,C T HAT CONTAINS EVERY ITEM FROM ARRAYS A AND B,IN ASCENDING ORDER.(10 MARKS) 4.WRITE A FUNCTION IN C THAT WOULD TRAVERSE A LINEAR SINGLY LINKED LIST IN REVERSE AND WRITE OUT THE CONTENTS IN REVERSE ORDER.(10 MARKA) 5.WRITE A PROGRAM TO READ A SET OF INTEGERS AND TO SEPARATE ALL ODD AND EVEN NUMBERS .WRITE ALL EVEN NUMBERS IN ASCENDING ORDER.(10 MARKS) 6.WRITE A PROGRAM TO READ A REAL NUMBER X ANF FIND THE EVEN NUMBER NEAREST TO X.(10 MARKS) 7.WRITE A PROGRAM TO MULTIPLY TWO MATRICES OF ORDER M*N AND N*P RESPECTIVELY.(10 MARKS) 8.WRITE A PROGRAM IN'C' TO IMPLEMENT K-MAP SIMPLIFICATION TECHNIQUE.(10 MARKS) http://www.coolinterview.com/interview/5970 main() { char * strA; char * strB = I am OK; memcpy( strA, strB, 6); } http://www.coolinterview.com/interview/5989 Output of this Programme please?? main() { int a[]={2,4,6,8,10}; int i; change(a,5); for(int i=0;i<=4;i++) printf("n %d", a[i]); } change(int *b,int n) { int i; for(i=0;i *(b+i) = *(b+i)+5; } sytaxis correct?? was asked i a test http://www.coolinterview.com/interview/5959 What is modular programming? http://www.coolinterview .com/interview/972 What is the benefit of using const for declaring constants? http://www.coolinterview.com/interview/6059 Top Categories Data Warehousing Interview Questions Database Interview Questions Microsoft Interview Questions Java/J2EE Interview Questions Prog. 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