1) C; 2) Yes, only 1s and 0s; 3) No, given a certain dimension (it's a squared matrix) it remains the same through the runtime

Yes, but physically it is not wrong. Integer value is same size as integer pointer, and integer pointer is a memory cell too. We can use it as a common integer value, or store addresses in integer type.

> Integer value is same size as integer pointer Lol, wtf 1. It is not correct to compare these 2. It is a wrong statement to make. Try compiling for x64, for example, this static assert static_assert(sizeof(int*) == sizeof(int)); And guess what? You get a compile erorr

Well yes, you are right. I told about my platform

Ok, sorry, I just cut the statement off from the dialogue But my advice is not to depend on any platform specific stuff when programming in C++ or C — this will make code cleaner and safer

Hi guys, I am looking for some advice here cause I really don't know how to move: I am asked to fill a possibily very huge matrix with 0s and 1s. The problem is, the more this matrix grows, the more memory those 1s and 0s will occupy. So the first thing I said was "fine, I shall use unsigned shorts in order to represent 0s and 1s, as a whole int seems unnecessary"; then I thought "what about actually creating a binary number, which takes only 1 bit in memory?"... this way, I would optimize the memory occupation of the matrix, but I don't know how to do that. Do you have any suggestions? Sadly, I do not have any code, because other than using a bit mask I haven't come up with anything useful (note, I just started C programming, therefore I am no real expert, but feel free to give me, if you are willing to, as much complex code as you want, I'll try to figure it out by myself later on)... thanks!

string phrase= "giraffe bigboss"; char pharse[ ] [ 10 ]= {"giraffe bigboss"}; does the space between giraffe and bigboss counts? how it is behind the scenes k mean 'g','i','r','a'....... can someone explain writing a code?

string phrase= "giraffe bigboss"; char pharse[ ] [ 10 ]= {"giraffe bigboss"}; does the space between giraffe and bigboss counts? how it is behind the scenes k mean 'g','i','r','a'....... can someone explain writing a code?

It does count The space is a character

> Integer value is same size as integer pointer Lol, wtf 1. It is not correct to compare these 2. It is a wrong statement to make. Try compiling for x64, for example, this static assert static_assert(sizeof(int*) == sizeof(int)); And guess what? You get a compile erorr

Only x32 ABI that has 32 bits pointer but using x64 calling convention

Wat

Yes, x32 ABI has 32 bit memory address but using x64 calling convention

1. Wtf 2. How does it relate to my message?

> Integer value is same size as integer pointer

So? C++ standard doesn't guarantee that

Ow, maybe it's only avaiable on linux

so basically i am trying to print the number of seconds the user took to complete the subtraction test, but its giving a very long values

#include <stdio.h> #include <stdlib.h> #include <time.h>   int main(){ int count = 1; int totalCorrect = 0; int totalWrong = 0;   while (count < 6){ int number1; int number2;   //sets the initial point (seed) for generating random numbers srand(time(NULL));   // random number between 0 and 9 inclusive number1 = rand() % 10; number2 = rand() % 10; int userAnswer; int subtraction; subtraction = number1 - number2; printf("\nwhat is %d - %d = ", number1, number2); scanf("%d", &userAnswer); count++;   if (userAnswer == subtraction){ printf("You are correct\n"); totalCorrect++; } if (userAnswer != subtraction){ printf("You are wrong\n"); printf("%d - %d should be %d\n", number1, number2, subtraction); totalWrong++; } } int average = (total /count) * 100; printf("\nCorrect count is %d\n", total); printf("count is %d\n", count); printf("Test time %ld seconds\n", time(NULL)); printf("Your average for this test is %d percent\n", average); // current time in seconds since January 01, 1970 printf("\nCurrent Time: %ld seconds\n", time(NULL));   return 0; }

Are you using *nix system ? If you're using linux, just install POSIX developer manual page than run man time.h Or you could just search man time.h using your favorite search engine

I am using MacBook

#include <stdio.h> #include <stdlib.h> #include <time.h>   int main(){ int count = 1; int totalCorrect = 0; int totalWrong = 0;   while (count < 6){ int number1; int number2;   //sets the initial point (seed) for generating random numbers srand(time(NULL));   // random number between 0 and 9 inclusive number1 = rand() % 10; number2 = rand() % 10; int userAnswer; int subtraction; subtraction = number1 - number2; printf("\nwhat is %d - %d = ", number1, number2); scanf("%d", &userAnswer); count++;   if (userAnswer == subtraction){ printf("You are correct\n"); totalCorrect++; } if (userAnswer != subtraction){ printf("You are wrong\n"); printf("%d - %d should be %d\n", number1, number2, subtraction); totalWrong++; } } int average = (total /count) * 100; printf("\nCorrect count is %d\n", total); printf("count is %d\n", count); printf("Test time %ld seconds\n", time(NULL)); printf("Your average for this test is %d percent\n", average); // current time in seconds since January 01, 1970 printf("\nCurrent Time: %ld seconds\n", time(NULL));   return 0; }

why you using int on average

why you using int on average

What will happen if the variable is accessed without initialisation

Undefined Behaviour

λalo.alo: Hello, I'm having problems initializing elements in an int array. As you can see in gist.github.com/aloxyz/d70c9e1b0629d920635d57ad1c13a40c , make_numbers is supposed set each number.digits to the corresponding str element given in as an argument to make_number. The problem is that n is always set to 49 or 48. I hope you can help me with this, thanks for your time

λalo.alo: Hello, I'm having problems initializing elements in an int array. As you can see in gist.github.com/aloxyz/d70c9e1b0629d920635d57ad1c13a40c , make_numbers is supposed set each number.digits to the corresponding str element given in as an argument to make_number. The problem is that n is always set to 49 or 48. I hope you can help me with this, thanks for your time

λalo.alo: Hello, I'm having problems initializing elements in an int array. As you can see in gist.github.com/aloxyz/d70c9e1b0629d920635d57ad1c13a40c , make_numbers is supposed set each number.digits to the corresponding str element given in as an argument to make_number. The problem is that n is always set to 49 or 48. I hope you can help me with this, thanks for your time

> The problem is that n is always set to 49 or 48 I don't understand this

i can send you a screenshot of gdb in DMs if you wish, it's hard to explain

n is struct right ?

n is a number struct, yes

the problem is that instead of initializing n to {1,0,1,0} it's initialized to {49, 48, 49, 48}

the problem is that instead of initializing n to {1,0,1,0} it's initialized to {49, 48, 49, 48}

That's it, u subract it using 0. And that is useless

just either 49 or 48

That's it, u subract it using 0. And that is useless

I have told u it's ascii char use - 48

didn't change

I have told u it's ascii char use - 48

It should be size_t ?