for practice : https://gateoverflow.in/254355/test-series-question

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42 votes

Best answer

'$a$' is a two dimensional array.

- $a =$ address of $0^{th}$ index of 2-D array which means address of 1-D array
- $^*a =$ address of $0^{th}$ index element of $0^{th}$ index 1-D array
- $^{**}a =$ value at $0^{th}$ index element of $0^{th}$ index 1-D array
- $\implies ^{**}a = 1$
- $\implies ^{**}a+2 = 1+2 = 3$

- $a+3 =$ address of $3^{rd}$ index 1-D array
- $^*(a+3) = $ address of $0^{th}$ index element of $3^{rd}$ index 1-D array
- $^*(a+3)+3 =$ address of $3^{rd}$ index element of $3^{rd}$ index 1-D array
- $^*(^*(a+3)+3) =$ value at $3^{rd}$ index element of $3^{rd}$ index 1-D array $= 19$

Correct Answer: $19.$

5 votes

**Answer : 19**

a[4] [5] = {{1, 2, 3, 4, 5},

{6, 7,8, 9, 10},

{11, 12, 13, 14, 15},

{16, 17,18, 19, 20}};

**Lets solve step-by step : **

step1- * ( * ( a + ( * ( * a ) ) + 2 ) + 3 ) // note : ( *(* a)) = 1

step2- * ( * ( ( (a + 1 )+ 2) ) + 3 )

step3- * ( * ( a + 3) +3) // note : *(a+3) is address of the memory location where 16 is stored or address of 4th row

step4- * ( * ( a + 3) +3) // note. : *(a+3)+3 now its the address of 4th row and 4th column index. (a+0) is 1st row so a+3 is 4th row or address of 19

step5- * ( * ( a + 3) +3) means value stored at 4th row and 4th column .

so , 19