TechMahindra(MBT)  Placement Paper   Candidate Experiences   Not Specified-1 Mar 2006

TechMahindra(MBT)  Placement Paper   Candidate Experiences   Not Specified-1 Mar 2006


  • Posted by  FreshersWorld 
    7 Jan, 2012

    C-Test Paper
    1. #include
    * What is wrong in the following problem

    main() {
    int i,j;
    j = 10;
    i = j++ - j++;
    printf("%d %d", i,j);
    }
    ans: 0, 12

    2.#include * What is the output of the following problem
    main() {
    int j;
    for(j=0;j<3;j++)
    foo();
    }
    foo() {
    static int i = 10;
    i+=10;
    printf("%d\n",i);
    }

    /* Out put is (***since static int is used i value is retained between
    * 20 function calls )
    * 30
    * 40
    *
    /

    3.#include #include #include /* This is asked in PCS Bombay walk-in-interview
    * What is wrong in the following code
    */
    main()
    {
    char *c;
    c = "Hello";
    printf("%s\n", c);
    }
    /*ans:- Hello, The code is successfully running */

    4. #include /* This problem is given in PCS BOMBAY walk-in-interview.
    * What is the final value of i and how many times loop is
    * Executed ?
    */

    main()

    {
    int i,j,k,l,lc=0;
    /* the input is given as 1234 567 */
    printf("Enter the number string:<1234 567 \n");
    scanf("%2d%d%1d",&i,&j,&k);
    for(;k;k--,i++)
    for(l=0;l printf("%d %d\n",i,l);}
    printf("LOOPS= %d\n", lc-1);
    }
    /* Ans: i = 16, and loop is executed for 169 times */

    5.#include /* This is given in PCS Bombay walk-in-interview */
    /* What is the output of the following program */

    main() {
    union {
    int a;
    int b;
    int c;
    } u,v;
    u.a = 10;
    u.b = 20;
    printf("%d %d \n",u.a,u.b);
    }
    /* Ans : The latest value assigned to any of the union member
    will be present in the union members so answer is
    20 20
    */
    6.#include main()
    {
    float i, j;
    scanf("%f %f", &i, &j);
    printf("%.2f %.3f", i, j);
    }

    /Ans:- 123.34 3. 234 */

    7.#include /* This is given in PCS Bombay walk-in-interview
    * What is the out put of the following problem ?
    */

    main()
    {
    char *str = "12345";
    printf("%c %c %c\n", *str, *(str++), *(str++));
    }
    /* Ans: It is not 1 2 3
    * But it is 3 2 1 Why ??
    */

    8.#include /* This problem is asked in PCS Bombay Walk-in-interview
    * Write a macro statement to find maximum of a,b
    */
    #define max(a,b) (ab)?a:b
    main()
    {
    int a,b;
    a=3;
    b=4;
    printf("%d",max(a,b));
    }
    /* Ans is very simple the coding is just for testing it
    and output is 4 */

    ~
    9.#include /* This problem is asked in PCS Bombay
    * What is the output of the following coding
    */

    main()
    {
    int len=4;
    char *st="12345678";
    st = st -len;
    printf("%c\n",*st);
    }
    /* Ans : It will print some junk value */
    ~
    10.#include main()
    {
    func(1);
    }
    func(int i){
    static char *str ={ "One","Two","Three","Four"};
    printf("%s\n",str[i++]);
    return;
    }
    /* Ans:- it will give warning because str is pointer to the char but
    it is initialized with more values
    if it is not considered then the answer is Two */

    11.
    #include main()
    {
    int i;
    for (i=1;i<100; i++)
    printf("%d %0x\n",i,i);
    }
    /* Ans:- i is from 1 to 99 for the first format,
    for the second format 1to9, ato f, 10 to 19,1ato1f, 20 to 29, etc */


    12.#include /* This problem is asked in PCS Bombay walk-in-interview
    * In the following code please write the syntax for
    * assing a value of 10 to field x of s and id_no 101 of s
    */
    struct {
    int x;
    int y;
    union {
    int id_no;
    char *name;
    }b;
    }s,*st;
    main()
    {
    st = &s;
    st-x=10;
    st-b.id_no = 101;
    printf("%d %d\n",s..x,s.b.id_no);
    }
    /* Ans: The answer is st-x=10;
    * st-b.id_no=101;
    */
    13.#include /* This problem was asked in PCS Bombay in a walk-in-interview
    * Write a recursive function that calculates
    * n * (n-1) * (n-2) * ....... 2 * 1
    */

    main() {
    int factorial(int n);
    int i,ans;
    printf("\n Enter a Number:");
    scanf("%d",&i);
    ans = factorial(i);
    printf("\nFactorial by recursion = %d\n", ans);
    }
    int factorial(int n)
    {
    if (n <= 1) return (1);
    else
    return ( n * factorial(n-1));
    }

    ~
    14.#include /* This problem is asked in PCS Bombay walk-in-interview
    * What is the output of the following problem
    */
    main(){
    int j,ans;
    j = 4;
    ans = count(4);
    printf("%d\n",ans);
    }
    int count(int i)
    {
    if ( i < 0) return(i);
    else
    return( count(i-2) + count(i-1));
    }

    /* It is showing -18 as an answer */

    15.#include main()
    {
    int i=4;
    if(i=0)
    printf("statement 1");
    else
    printf("statement 2");
    }
    /* statement 2 */


    This is pcsb paper.

    1. #include * What is wrong in the following problem

    main() {
    int i,j;
    j = 10;
    i = j++ - j++;
    printf("%d %d", i,j);
    }
    ans: 0, 12

    2.#include * What is the output of the following problem
    main() {
    int j;
    for(j=0;j<3;j++)
    foo();
    }
    foo() {
    static int i = 10;
    i+=10;
    printf("%d\n",i);
    }

    /* Out put is (***since static int is used i value is retained between
    * 20 function calls )
    * 30
    * 40
    *
    /

    3.#include #include #include /* This is asked in PCS Bombay walk-in-interview
    * What is wrong in the following code
    */
    main()
    {
    char *c;
    c = "Hello";
    printf("%s\n", c);
    }
    /*ans:- Hello, The code is successfully running */

    4. #include /* This problem is given in PCS BOMBAY walk-in-interview.
    * What is the final value of i and how many times loop is
    * Executed ?
    */

    main()

    {
    int i,j,k,l,lc=0;
    /* the input is given as 1234 567 */
    printf("Enter the number string:<1234 567 \n");
    scanf("%2d%d%1d",&i,&j,&k);
    for(;k;k--,i++)
    for(l=0;l printf("%d %d\n",i,l);}
    printf("LOOPS= %d\n", lc-1);
    }
    /* Ans: i = 16, and loop is executed for 169 times */

    5.#include /* This is given in PCS Bombay walk-in-interview */
    /* What is the output of the following program */

    main() {
    union {
    int a;
    int b;
    int c;
    } u,v;
    u.a = 10;
    u.b = 20;
    printf("%d %d \n",u.a,u.b);
    }
    /* Ans : The latest value assigned to any of the union member
    will be present in the union members so answer is
    20 20
    */
    6.#include main()
    {
    float i, j;
    scanf("%f %f", &i, &j);
    printf("%.2f %.3f", i, j);
    }

    /Ans:- 123.34 3. 234 */

    7.#include /* This is given in PCS Bombay walk-in-interview
    * What is the out put of the following problem ?
    */

    main()
    {
    char *str = "12345";
    printf("%c %c %c\n", *str, *(str++), *(str++));
    }
    /* Ans: It is not 1 2 3
    * But it is 3 2 1 Why ??
    */

    8.#include /* This problem is asked in PCS Bombay Walk-in-interview
    * Write a macro statement to find maximum of a,b
    */
    #define max(a,b) (ab)?a:b
    main()
    {
    int a,b;
    a=3;
    b=4;
    printf("%d",max(a,b));
    }
    /* Ans is very simple the coding is just for testing it
    and output is 4 */

    ~
    9.#include /* This problem is asked in PCS Bombay
    * What is the output of the following coding
    */

    main()
    {
    int len=4;
    char *st="12345678";
    for(i=0; i<6; i++)
    st = st -len;
    printf("%c\n",*st);
    }
    /* Ans : It will print some junk value */
    ~
    10.#include main()
    {
    func(1);
    }
    func(int i){
    static char *str ={ "One","Two","Three","Four"};
    printf("%s\n",str[i++]);
    return;
    }
    /* Ans:- it will give warning because str is pointer to the char but
    it is initialized with more values
    if it is not considered then the answer is Two */

    11.
    #include main()
    {
    int i;
    for (i=1;i<100; i++)
    printf("%d %0x\n",i,i);
    }
    /* Ans:- i is from 1 to 99 for the first format,
    for the second format 1to9, ato f, 10 to 19,1ato1f, 20 to 29, etc */


    12.#include /* This problem is asked in PCS Bombay walk-in-interview
    * In the following code please write the syntax for
    * assing a value of 10 to field x of s and id_no 101 of s
    */
    struct {
    int x;
    int y;
    union {
    int id_no;
    char *name;
    }b;
    }s,*st;
    main()
    {
    st = &s;
    st-x=10;
    st-b.id_no = 101;
    printf("%d %d\n",s.x,s.b.id_no);
    }
    /* Ans: The answer is st-x=10;
    * st-b.id_no=101;
    */
    13.#include /* This problem was asked in PCS Bombay in a walk-in-interview
    * Write a recursive function that calculates
    * n * (n-1) * (n-2) * ....... 2 * 1
    */

    main() {
    int factorial(int n);
    int i,ans;
    printf("\n Enter a Number:");
    scanf("%d",&i);
    ans = factorial(i);
    printf("\nFactorial by recursion = %d\n", ans);
    }
    int factorial(int n)
    {
    if (n <= 1) return (1);
    else
    return ( n * factorial(n-1));
    }

    ~
    14.#include /* This problem is asked in PCS Bombay walk-in-interview
    * What is the output of the following problem
    */
    main(){
    int j,ans;
    j = 4;
    ans = count(4);
    printf("%d\n",ans);
    }
    int count(int i)
    {
    if ( i < 0) return(i);
    else
    return( count(i-2) + count(i-1));
    }

    /* It is showing -18 as an answer */

    15.#include main()
    {
    int i=4;
    if(i=0)
    printf("statement 1");
    else
    printf("statement 2");
    }
    /* statement 2 */

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