https://cs50.harvard.edu/x/2020/
I'll look into it sometime soon🤔
Deidara
klimi
as you wish
Xudoyberdi
David is awesome
Anonymous
Thanks ^^
Mohannad
Write one C++ program to do the following tasks:
a) Read the grades of 10 students from the keyboard.
Store the grades in a one-dimensional array called
“grade” of type integer.
b) Find the average of the grades
c) Find and print the maximum grade
d) Add to each students grades the following Bonus value:
100-maximum
e) Print from the monitor the students new grades
Anonymous
Could anyone tell me how to separate real number 4.41 example I need to print 4 separately 41 seperately.
Roshan
Could anyone tell me how to separate real number 4.41 example I need to print 4 separately 41 seperately.
Take the int value (4) then subtract from it
Anonymous
An ugly way would be sth like: int a { (int) 4.41};
int b {(int) ((4.41 - a)* 100)};
Im sure the are better ways tho.
Anonymous
also reinterprert_cast is prefered over c style casts
Anonymous
felt too lazy to type it out
Roshan
Could anyone tell me how to separate real number 4.41 example I need to print 4 separately 41 seperately.
Static_cast<int>(4.41) will give you 4
Then store it somewhere
Subtract 4 from it
Anonymous
static cast to int from double works? 🤔
Anonymous
could be im honestly not sure 😅
Anonymous
but i have in my head that the compiler would complain about information loss
Roshan
Anonymous
Okay, mb ^^
olli
also reinterprert_cast is prefered over c style casts
C style cast can be either static_cast or reinterpret_cast [expr.cast]. Please stop suggesting to use reinterpret_cast if one is unsure what it does. In this case it's UB and should not be done.
In general, if you wonder whether or not to use reinterpret_cast you probably should not. When you actually need to use it you will know.
This is UB and probably not what you want
It prints 171798692 (on Linux x64 - GCC 10)
#include <cstdio>
int main() {
double X = 4.41;
int Y = *reinterpret_cast<int*>(&X);
std::printf("%d\n", Y);
}
For c-styled casts, the first one is basically a static_cast, the second one a reinterpret_cast
#include <cstdio>
int main() {
double X = 4.41;
{
// static_cast
int Y = (int)X;
std::printf("%d\n", Y); // 4
}
{
// reinterpret_cast
int Y = *(int*)&X;
std::printf("%d\n", Y); // 171798692
}
}
Igor🇺🇦
Could anyone tell me how to separate real number 4.41 example I need to print 4 separately 41 seperately.
Use trunk(val) and val - trunk(val)
https://en.cppreference.com/w/cpp/numeric/math/trunc
Anonymous
ha
mov $22, %rax
Guys, do you know of any enviroment to develop efi executables in C/C++?
Alex
Coffee
/get cbook
Anonymous
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#pragma disable (4996)
int main () {
FILE * fb1;
FILE * fb2;
int car;
int i;
int vett1 [4]; = {a, b, c, d}
int vett2 [4]; = {d, c, b, a}
for (i = 0; i <4; i ++) {
printf ("insert the character% d: \ n", i + 1);
scanf ("% c", auto);
vett1 [i] = car;
}
printf ("the characters contained in the vector are:");
for (i = 0; i <4; i ++) {
printf ("the character% d is:% d", i + 1, vett1 [i]);
}
fb1 = fopen ("filecar.dat", "wb");
if (fb1! = NULL) {
fwrite (vett1, sizeof (int), 4, fb1);
}
other {
printf ("Error !!");
fclose (fb1);
}
fb2 = fopen ("filecar.dat", "rb");
if (fb2! = NULL) {
fread (vett2, sizeof (int), 4, fb2);
for (i = 0; i> 4; i ++)
{
printf ("the character% d is:% d", i + 1, vett2 [i]);
}
}
other {
printf ("Error !!");
}
fclose (fb1);
printf ("\ n \ n");
}
Anonymous
tells me there is an error
Prince Of Persia
How struct in C work (in assembly code)?
HaiNahi
Why do you put semicolon in middle of declaring an array
olli
How struct in C work (in assembly code)?
the members of a struct are layed out in a consecutive memory region.
Prince Of Persia
the members of a struct are layed out in a consecutive memory region.
I know this
but how?
Prince Of Persia
how they are in a block of memory?
Prince Of Persia
(in assembly)
olli
how they are in a block of memory?
I'm not really sure what exactly you want to know. If you have a simple structure like this
struct Foo {
int x;
char y[4];
};
and then a function which creates an object
void foo() {
Foo F { 1, "hi!" };
}
your compiler might choose to allocate space on the stack and write the members onto it.
E.g.
foo():
push rbp
mov rbp, rsp
# Write 1to F.x
mov DWORD PTR [rbp-8], 1
# strcpy "Hi!\0" into F.y
mov DWORD PTR [rbp-4], 2189672
pop rbp
ret
Prince Of Persia
I'm not really sure what exactly you want to know. If you have a simple structure like this
struct Foo {
int x;
char y[4];
};
and then a function which creates an object
void foo() {
Foo F { 1, "hi!" };
}
your compiler might choose to allocate space on the stack and write the members onto it.
E.g.
foo():
push rbp
mov rbp, rsp
# Write 1to F.x
mov DWORD PTR [rbp-8], 1
# strcpy "Hi!\0" into F.y
mov DWORD PTR [rbp-4], 2189672
pop rbp
ret
I want to program in assembly like what C and do by hand
olli
I want to program in assembly like what C and do by hand
why? apart from learning there is no good reason to do so.
but otherwise I'd recommend writing C code and looking at the generated assembly code, e.g. at godbolt.org
Prince Of Persia
why? apart from learning there is no good reason to do so.
but otherwise I'd recommend writing C code and looking at the generated assembly code, e.g. at godbolt.org
I have done objdump in Linux and it's no help
Prince Of Persia
I can send disassembled of it
olli
I have done objdump in Linux and it's no help
I'd recommend taking a look at simple examples, e.g. how a struct is passed to or returned from a function. Once you get the basic concept you can take a look at more complex dissambled code.
Asad
olli
How about also GCC with -S flag?
Anonymous
Hey greetings
Anonymous
Anyone can help me?
Anonymous
Dont ask to ask, just ask :) possibly sb is able to help and will respond
Anonymous
1. Read the lines of the txt file in 3 vectors, the float vector of X, Y and Z.
2. With the data you just read is a wave in the time domain
and, knowing the duration of the collection, make the Fast Fourier Transform (FFT)
3 axes, passing the signal to the frequency domain.
How can i make this in C++?
Anonymous
1. Read the lines of the txt file in 3 vectors, the float vector of X, Y and Z.
2. With the data you just read is a wave in the time domain
and, knowing the duration of the collection, make the Fast Fourier Transform (FFT)
3 axes, passing the signal to the frequency domain.
How can i make this in C++?
Who wants more informations and can help, call me in whatsapp +5511 965877994
Asad
Who wants to do a code review? I have written simple Vector DS implementation in C language. Would love to hear "constructive criticism" )
Igor🇺🇦
Who wants to do a code review? I have written simple Vector DS implementation in C language. Would love to hear "constructive criticism" )
This site suites your needs better: https://codereview.stackexchange.com/
RC
Anyone know good apps to code C for cell phones?
HaiNahi
Anyone know good apps to code C for cell phones?
Yeah cxx droid for sdl and termux for other command line stuff
RC
Thank you all
beluga_hz
Hi everyone
Yedi
https://ibb.co/xGSzFwV
Yedi
I wrote the codes like in my teacher's work, but the lines I circled in my work don't look like my teacher's, why?
Roshan
Roshan
The array is not initialized
Yedi
yes
Yedi
F11
Igor🇺🇦
I wrote the codes like in my teacher's work, but the lines I circled in my work don't look like my teacher's, why?
It looks like debugger in on the first line before arr is initialised
Dark
Is it something related to programming? Use paint
yes programming, please tell me how to attach pgm to c++ and change rows to coulmns
Manav
yes programming, please tell me how to attach pgm to c++ and change rows to coulmns
https://docs.opencv.org/master/d3/df2/tutorial_py_basic_ops.html
Anonymous
i have a doubt in my code ,i code in online compiler but it is showing error
Anonymous
is there anyone to correct my coide
Tagansat
👍🏻
Anonymous
ok i am sending
Anonymous
/how will i send my code here?????
Anonymous
can i tell u the question of code ???/
Anonymous
write a program in c language ,if a student scores 40% total and atleast 30% marks in each subject then he is pass or he fails ,no of subjects is 3 phy,chem,math
Nameful
Roshan
Anonymous
i have code it in online compiler but it is showing error
Anonymous
@ swastik pass marks is 30% in individual subjects