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why array index always starts from zero??
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It uses the concept of Binary digits. Take an array size of 64 for example. We start from 0 and end at 63,
We require 6 bits.But, if we were to start from 1 and end at 64, we would require 7 bits to store the same number,
thus increasing the storage size.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / bijayalaxmi behera.
The index of an array is an OFFSET from the beginning of the
array, multiplied by the width of the array items:
Say an array of integers, 4 bytes long.
Say beginning of array at address 0x1000
First integer address: BaseAddress + (index * len) = 0x1000
+ ( 0 * 4) = 0x1000
Second integer will be at : 0x1000 + ( 1 * 4 ) = 0x1004.
| Is This Answer Correct ? | 4 Yes | 6 No |
Answer / nobody special
because starting from 3 would just be silly?
| Is This Answer Correct ? | 1 Yes | 9 No |
Explain function pointer with exapmles.
Just came across this question, felt worth sharing, so here it is I want you to make a C/C++ program that for any positive integer n will print all the positive integers from 1 up to it and then back again! Let's say n=5 I want the program to print: 1 2 3 4 5 4 3 2 1. Too easy you say? Okay then... You can ONLY USE: 1 for loop 1 printf/cout statement 2 integers( i and n) and as many operations you want. NO if statements, NO ternary operators, NO tables, NO pointers, NO functions!
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