Patni Computer Services(PCS) Sample Paper Paper - 36

1. Number of Weights needed for weighing 1 to 40 kgs? 27 9 3 1 ans : 4
   
   
2. Venn diagram problem venndiagram find the formulae. Ans. (AB+BC+CA)(A,+B,+C,)
   
   
3. a +2b=6,ab=4 2/a + 1/b=? ans : 3/2
   
   
4. Age of 4 persons given in a relation find smallest age? ans : meera
   
   
5. find floating point result (float)25/2, float(25/2), 25/(float)2 ,25/2 ans: 1 & 3
   
   
6. find equivalent *(*(s+x)+y) ==> s[x][y] ans : content of s[x][y]
   
   
7. find invalid statement : int a[3]
   1. scanf("%d",a[2]);
   2. scanf("%d",&a[2]);
   3. scanf("%d",a);
   4. all
   ans : 1
   
   
8. One palindrome programme was given in recursion ans : pal(f++,t--)
   
   
9. main program:
   i=foo(2) foo(int s)
   {
   if(!s)
   return s;
   else
   { int i=5; return i}
   }
   ans : 5
   
   
10. k=0 i=0j=1;
    if(i0)&&(k=2) printf(k);
    if(i0|| k=0)
    printf(k)
    ans: 2 2
    
    
11. cube is moulded as a sphere. find the ratio of cube of surface area of sphere to squareof surface area of cube. ans pi/6
    
    
12. Teacher in math=4 p6=3 kmistry=3 each can take 2 subject minimum teacher needed for school ans : 5
    
    
13. 3 vowels,4 consonents formulate string of 6 letters with a vowel in a string max no of string ? ans: 5040
    
    
14. binnary of .6875. 0.1011
    
    
15. man walks at speed of 8 km/h 300 mtrs length train crosses man in 30 sec from back, find speed of train ans: 44 km/hr
    
    
16. main()
    {
    char ch;
    int count=0;
    while((ch = getch() != ,\n,)
    {
    while (ch == , ,)
    ch = getch();
    while((ch!=, ,) && (ch!=,.,))
    {
    count++;
    ch=getch();
    }
    }
    ans : 11
    
    
17. Radius of a circle is 5cm , if we draw a rectangle of maximum size, what is the area of rectangle ans : 50 cmsq
    
    
18. main()
    {
    int i;
    for(i=0;i<3;i++)>
19. There r 3 boys 7 4 girls; Howmany ways they r arranged such that boys should be always together ???Ans: 240
    
    
20. If n.....; What is the max no that divides (Ans: 8)
    
    
21. A,B,C,D has values from 0 to 9.... What is D ? (Ans: 6)
    
    
22. A wodden piece taken which is in shape of Triangle , of 10 X 24 X 26 ; Then cut at some ..... which is rearranged
    in rectangle format; so what is ... (Ans: 5)
    
    
23. There r 5 numbers. The average is 25; the highest value excluded then average is 25, if the lowest is excluded the avg is ..Then average of remaining is ? (Ans: 30)
    
    
24. The square is cut such that the end point of one side is shown in fig.. This is repeated two times, what is the area ??
    (Ans: 3.61)
    
    
25. The route problem... what is the shortest rout to p1 to p2... (There may be circle figure......) (Ans: From p1 to 0 & form 0 to p8)
    
    
26. Two motor cycles A & B are started from one point at 4 Kmph & 6 Kmph; After 45 min B starts returning , at what
    time they will reach.... (Ans: 3.6 km)
    
    
27. All integer from 0 to 9, what is the smallest no perfectly devides; (Ans: c)
    
    
28. Some figure (Triangle in a rectangle)..... What is perimeter if triangle (Ans: 20)

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1. #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>\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 = 17, and loop is executed for 169 times */
   
   
2. #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 */
   
   
3. #include
   main()
   {
   int i;
   for (i=1;i<100;>
4. #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)); }
5. #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 <>
6. #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>\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 */