show what have you done so far.

Why do some compiler uses (int main) instead of (void main )

Because for every process that an os do there is an exit code which tells how it behaved . So its good to have return code like 0 which means all went perfectly as indented.and may returns some code if an error occur on to which we can see what is problem

Because for every process that an os do there is an exit code which tells how it behaved . So its good to have return code like 0 which means all went perfectly as indented.and may returns some code if an error occur on to which we can see what is problem

Old compiler like boroland or turboc++ allow void main() but mingw() shows an error and wont compile.

Should I use learncpp.com to start cpp i practiced in c now I want to switch to cpp ?

Go for cpp, that's a very good site to learn cpp :)

Should I use learncpp.com to start cpp i practiced in c now I want to switch to cpp ?

You will have to switch for many topics so dont just blindly follow any one. Else this fine.

Because for every process that an os do there is an exit code which tells how it behaved . So its good to have return code like 0 which means all went perfectly as indented.and may returns some code if an error occur on to which we can see what is problem

👍

Old compiler like boroland or turboc++ allow void main() but mingw() shows an error and wont compile.

It didn't show any error when i used void main().

It didn't show any error when i used void main().

It does (using GNU gcc compiler and mingw) and say: "main must return int" Which were you using?

Because for every process that an os do there is an exit code which tells how it behaved . So its good to have return code like 0 which means all went perfectly as indented.and may returns some code if an error occur on to which we can see what is problem

It does (using GNU gcc compiler and mingw) and say: "main must return int" Which were you using?

the same compiler in vs code

https://pastebin.com/dSGS1pTx even after making intersection btw two nodes . iam getting a -1 return value!! any help

#include<stdio.h> #include<stdlib.h> main () { int *p = (int*) malloc(sizeof (int)); *p=4; printf("%d", (*p)+++*p++);) } The above code prints the op 9 I can understand this operation is similar to i+++i++ But if I remove brackets from this (*p)+++*p++......ie...*p+++*p++ it prints 4 Why does this happen What's the difference between *p and (*p) Can anyone help

>*p and (*p) they are the same

#include<stdio.h> #include<stdlib.h> main () { int *p = (int*) malloc(sizeof (int)); *p=4; printf("%d", (*p)+++*p++);) } The above code prints the op 9 I can understand this operation is similar to i+++i++ But if I remove brackets from this (*p)+++*p++......ie...*p+++*p++ it prints 4 Why does this happen What's the difference between *p and (*p) Can anyone help

but in that code you have *P and *p , P and p are different variables

Then it must print 9 for both the cases nah 1.(*P)+++*p++ 2.*P+++*p++

but in that code you have *P and *p , P and p are different variables

No it's the same variable I just made a mistake while typing here

oh okay

>*p and (*p) they are the same

(*p)++ and *p++ are not though.

Mmm

#include<stdio.h> #include<stdlib.h> main () { int *p = (int*) malloc(sizeof (int)); *p=4; printf("%d", (*p)+++*p++);) } The above code prints the op 9 I can understand this operation is similar to i+++i++ But if I remove brackets from this (*p)+++*p++......ie...*p+++*p++ it prints 4 Why does this happen What's the difference between *p and (*p) Can anyone help

That's undefined behavior, the order of increment is vague and may differ on different compiler.

(*p)++ and *p++ are not though.

yep

https://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points

Please dont post offtopic here, if you want to casually chit chat, visit the offtopic group

#ot

Please dont post offtopic here, if you want to casually chit chat, visit the offtopic group

Whstt

#include<stdio.h> #include<stdlib.h> main () { int *p = (int*) malloc(sizeof (int)); *p=4; printf("%d", (*p)+++*p++);) } The above code prints the op 9 I can understand this operation is similar to i+++i++ But if I remove brackets from this (*p)+++*p++......ie...*p+++*p++ it prints 4 Why does this happen What's the difference between *p and (*p) Can anyone help

UB ? 🤔

Undefined behaviour

Undefined behaviour

Ohh ok

the same compiler in vs code

Anyway. There are only 2 different types of main signatures in the C++ standard: int main() { /* ... */ } int main(int argc, char* argv[]) {/* ... */ } Then, void return types are incorrect in terms of the C++ standard. Use int as return type of main is good practice as he says above

It does (using GNU gcc compiler and mingw) and say: "main must return int" Which were you using?

https://pasteboard.co/KaykfP5.jpg

Anyway. There are only 2 different types of main signatures in the C++ standard: int main() { /* ... */ } int main(int argc, char* argv[]) {/* ... */ } Then, void return types are incorrect in terms of the C++ standard. Use int as return type of main is good practice as he says above

ohh i meant in C, not C++, thnx for the suggestion

ohh i meant in C, not C++, thnx for the suggestion

Oops! I'm out... 😀

https://pastebin.com/dSGS1pTx even after making intersection btw two nodes . iam getting a -1 return value!! any help

Anyone ?

Hi guys Any one have cheat sheet for C++ programming languge?

A program that gives you five questions to answer and then calculates the number of correct and wrong answers #include <iostream> #include<string> using namespace std; int main() { string y="t" ,o="T"; string x="f" ,h="F"; int correct=0; int wrong=0; string a,b,c,d,e; cout<<"Does int accept a numeric variable??\n"; cout<<"Choose the answer T/F: ";cin>>a; if (a==y || a==o) { cout<<"Correct"<<endl; correct++; } else { cout<<"Wrong"<<endl; wrong++; } cout<<"\nIs it possible to divide by zero?\n"; cout<<"Choose the answer T/F: ";cin>>b; if (b==x || b==h) { cout<<"Correct"<<endl; correct++; } else { cout<<"Wrong"<<endl; wrong++; } cout<<"\nCan we use function inside function?\n"; cout<<"Choose the answer T/F: ";cin>>c; if (c==y || c==o) { cout<<"Correct"<<endl; correct++; } else { cout<<"Wrong"<<endl; wrong++; } cout<<"\nIs the first index in the array 0?\n"; cout<<"Choose the answer T/F: ";cin>>d; if(d==y || d==o) { cout<<"Correct"<<endl; correct++; } else { cout<<"Wrong"<<endl; wrong++; } cout<<"\nCan the son's class inherit from the father's class if the father's class is privet?\n"; cout<<"Choose the answer T/F: ";cin>>e; if(e==x || e==h) { cout<<"Correct"<<endl; correct++; } else { cout<<"Wrong"<<endl; wrong++; } cout<<"\nThe number of Correct awnser is: "<<correct<<endl; cout<<"The number of Wrong awnser is: "<<wrong<<endl; if (wrong==5) cout<<"Are you stupid??!!\n"; else if(correct==5) cout<<"You are so smart!!!\n"; else if(correct>wrong) cout<<"You are good. *Perfect*\n"; else cout<<"Study hard. *Good luck*\n"; }

Hi guys, I am learning bootloader for s32k144, anyone has any link to study that.

Oh my hella god, what a monster

can you 1) delete this wall of text, 2) go to godbolt.org, 3) paste the code, 4) use godbolt's code formatter to auto-format the code, 5) share a link to your code on godbolt.

alternatively, you can format the code on your local system and then paste it to wandbox.org and post a link to your code on wandbox

website for c++ practice and problems from zero till the end ?

website for c++ practice and problems from zero till the end ?

doesn't really exist. try the books mentioned in stackoverflow (command available in pinned post here)

and even then, books will only make you a master of the language itself. between that and actually being able to write/understand large programs/codebases is a huge gap.

alternatively, you can format the code on your local system and then paste it to wandbox.org and post a link to your code on wandbox

Thanks a lot

so how can i practice from level zero problems till advanced step by step??

so how can i practice from level zero problems till advanced step by step??

https://t.me/programminginc/402887

thx i appreciate it

hello can anyone help me to solve my assigment

hello can anyone help me to solve my assigment

https://t.me/programminginc/283193

*Put away your homework GIF*

what setprecision do in c++?

#include <stdio.h> int main(){ int x = 0 ; while (x <= 10){ printf("hello \n"); x+=1; } //dcsdc while (x <= 5 ){ printf("x is %d \n",x); x++; } }

i wrote this code but got only this output

hello hello hello hello hello hello hello hello hello hello hello

why i couldn't get the output for printing numbers?

there was no any errors showing!

Say out loud what your program does

It prints 10x hello word, and then it prints 5-x times hello + number

Say out loud what your program does

i can send screenshot so u can

But the x is greater that 5, so that's why it's not printed

#include <stdio.h> int main(){ int x = 0 ; while (x <= 10){ printf("hello \n"); x+=1; } //dcsdc while (x <= 5 ){ printf("x is %d \n",x); x++; } }

x variable's value is 10 after first while therefore do not come in to second while

#include <stdio.h> int main(){ int x = 0 ; while (x <= 10){ printf("hello \n"); x+=1; } //dcsdc while (x <= 5 ){ printf("x is %d \n",x); x++; } }

The first while loop changes the value of x, and when u exit the loop, the value of x is 11, so it doesn't satisfy the second while loop condition

i can send screenshot so u can

What screenshot? You have already sent the code

But the x is greater that 5, so that's why it's not printed

okok .... i got it . i wanted to put this code above

thanks

Np

why i couldn't get the output for printing numbers?

#include <stdio.h> int main(){ int x = 0 ; while (x <= 10){ printf("%d hello \n", x); x+=1; } }

Added %d --> for 1st while loop which contains hello for 10x

If want to print with 1 to 11 then edit " x=0; to x=1;

why i couldn't get the output for printing numbers?

#include <stdio.h> int main(){ int x = 0 ; while (x <= 10){ printf("hello \n"); x+=1; } printf("x is %d \n",x); x++; }

#include <stdio.h> int main(){ int x = 0 ; while (x <= 10){ printf("hello \n"); x+=1; } //dcsdc while (x <= 5 ){ printf("x is %d \n",x); x++; } }

The problem here that you did while loop and let the condition about the x and said while x less or equal 5 then do what is required inside brackets but in fact x not less or equal 5, after the first while loop x will be equal 11 so the condition inside second while loop will be wrong

#include <stdio.h> int main(){ int x = 0 ; while (x <= 10){ printf("hello \n"); x+=1; } //dcsdc while (x <= 5 ){ printf("x is %d \n",x); x++; } }

And also if you let the x in second while loop greater or equal five, it will run out sentences infinity

Hi anybody can suggest a book for c++

Hi anybody can suggest a book for c++

The C++ Programming Language by Bjarne Stroustrup

Hello everyone. The firstly I'm Oybek, from Uzbekistan and I want to learn c programming so where i can learn it better? Could you give some advace?

I mean in which country

Hello everyone. The firstly I'm Oybek, from Uzbekistan and I want to learn c programming so where i can learn it better? Could you give some advace?

You can learn from your house

There are many books that you can buy to study or use the documentation (free)...

There are many books that you can buy to study or use the documentation (free)...

Can you give names or links please