January 2012 Tech Mahindra Placement Paper:- 1. main( ) { int x,y, z; x=2; y=5; z= x+++y; printf("%d %d %d", x, y z); } a)3 5 7 b)option 2 c)option 3 d)option 4 Ans: a 2. What is the output of the program void main() { struct a { int i; char *st1; }; typedef struct a ST; ST *str1; str1=(ST*)malloc(100); str1->i=100; strcpy(str1->st1,"Welcome to Oracle"); printf(" %d%s\n",str1->i,str1->st1); getch(); } A. core dump B. will not compile c. 100,Welcome to Oracle D. None of these Ans: C 3. What is the output of the program void main() { int i,j,k; i=2; j=4; k=i++>j&2; printf("%d\n",k); if(++k && ++i<--j|| i++) { j=++k; } printf(" %d %d %d",i,-j--,k); getch(); } // A. 4,-3,2 // B. 5,-3,2 // c. 4,-2,2 // D. 5,-2,2 Ans: D 4.if q <> 0 and k = qr/2 -s, then what is r in terms of k,q,s? a) 2k+s q b) 2sk q c) 2(k-s) q d) 2k+sq q e) 2(k+s) q Ans: e 5. If taxi fares were Rs 1.00 for the first 1/5 mile and Rs 0.20 for each 1/5 miles thereafter. The taxi fare for a 3-mile ride was (A)Rs 1.56 (B)Rs 2.40 (C)RS 3.00 (D)Rs 3.80 (E)Rs 4.20 Answer :d)Rs 3.80 6. How many integers n greater than and less than 100 are there such that,if the digits of n are reversed, the resulting integer is n+9 ? (A)5 (B)6 (C)7 (D)8 (E)9 Ans :D)8 7. An investor purchased a shares of stock at a certain price.If the stock increased in price Rs 0.25 per share and the total increase for the x shares was Rs 12.50, how many shares of stock had been purchased ? (A)25 (B)50 (C)75 (D)100 (E)125 Ans :B)50 8. For 1 MB memory, the number of address lines required, (a)11 (b)16 (c)22 (d) 24 Ans. (b) 9. Piggy backing is a technique for a) Flow control b) Sequence c) Acknowledgement d) retransmition Ans. (c) 10. fresh mango consists of 70% water and dry mango consists of 10% water then 20Kg of fresh mango is equivalent to how much of dry mango
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