Do we always have get the source of compilers, gcc or clang? Is there anything which strips down only to the language implementation?

Compilers and their libraries are the implementations, the specifications are the language standards (a specific C standard or C++ standard)

You mean as defined by ansi c for c11 or c17. So if i pick any compiler, they will have same implementations for internals of c?

You mean as defined by ansi c for c11 or c17. So if i pick any compiler, they will have same implementations for internals of c?

You mean as defined by ansi c for c11 or c17. So if i pick any compiler, they will have same implementations for internals of c?

This seems interesting so I can have my own variant of c if I follow the standards

e.g. as long as you align with the requirements of fopen, the standard "guarantees it will work" https://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html

Yes, you can make your own C compiler and your own standard library implementation

I see so the man pages in linux are somewhat made similar to this standards. Thanks, I see there are many references given to various functions

I wrote a minimal implementation of clib / stdlib following this approach

Just a doubt bothers me, if I make my own compiler then who will compile by compiler

I wrote a minimal implementation of clib / stdlib following this approach

Probably nobody will use a custom compiler made by someone unknown. Unless it will be advertised a lot as a good and fast compiler (better or faster than the existing ones)

hey I heard of libc, so basically it has everything what standards say & if i am not wrong then gcc or any compilers make use of libc

hello everyone can anyone share with me , eclipse setup so that I can use to write and run code

hello everyone can anyone share with me , eclipse setup so that I can use to write and run code

hello. anyone here can help me with my activity. c++ language.

Hi Is there some way to get source code of c as like we can get for php or other language. I want to know internals of preprocessor

It's correct,hear am indicating that if the marks is outside that range (0-100),then it should revoke, display it's outside the range and to retry

just use cdt https://www.eclipse.org/cdt/

#include<iostream> using namespace std; void swap(int arr[], int a, int b){ int temp=arr[a]; arr[a]=arr[b]; arr[b]=temp; } int pivot(int arr[], int f, int l){ int pi=arr[l]; int i=f-1; for(int j=f;j<l;j++){ if(arr[j]<pi){ i++; swap(arr, i, j); } } swap(arr, i+1, l); } void quicksort(int arr[], int f, int l){ if(f<l){ int mid=pivot(arr, f, l); quicksort(arr, f, mid-1); quicksort(arr, mid+1, l); } } int main(){ int n; cin>>n; int array[n]; for(int i=0;i<n;i++){ cin>>array[i]; } quicksort(array, 0, n-1); for(int i=0;i<n;i++){ cout<<array[i]<<" "; } return 0; } Whats wrong in this code of quick sort, am not getting any output

It should be: #include <iostream>

With a space between the e and the <

I finish html😍

Hi I'm new here

Welcome here though

it was needed because our compiler library was lacking some implementations (about strings), and we wanted instead to write our code with full std::string support. unfortunately I cannot share it both because I don't have access to this code anymore, and because also if I did, I would not have the rights. But you can still browse open implementations and take inspiration: https://github.com/search?q=c+standard+library

So, I am on the very last chapter of "Absolute Beginners Guide to C" and I have copied the code exactly, but for whatever reason my compiler is giving me an error. expected identifier or '(' before '{' token and will not build. I'm guessing it's because the book is old and not using c99 standards, but I would be happy if someone could maybe translate the code to c99 or something? Here's the code. // Example program #1 from Chapter 32 of Absolute Beginner's Guide // to C, 3rd Edition // File Chapter32ex1.c /* The program demonstrates functions returning a value by passing three floating-point numbers (grades) and calculating the average of the three. */ #include <stdio.h> float gradeAve(float test1, float test2, float test3); int main () { float grade1, grade2, grade3; float average; printf("What was the grade on the first test? "); scanf(" %f", &grade1); printf("What was the grade on the second test? "); scanf(" %f", &grade2); printf("What was the grade on the third test? "); scanf(" %f", &grade3); //Pass the three grades to the function and return the average average = gradeAve(grade1, grade2, grade3); printf("\nWith those three test scores, the average is %.2f", average); return 0; } float gradeAve(float test1, float test2, float test3); // Receives the values of three grades { float localAverage; localAverage = (test1 + test2 + test3)/3; return (localAverage); // returns average }

Does it tell u which line?

float gradeAve(float test1, float test2, float test3); <---- the book has ";" ?

#include<iostream> using namespace std; void swap(int arr[], int a, int b){ int temp=arr[a]; arr[a]=arr[b]; arr[b]=temp; } int pivot(int arr[], int f, int l){ int pi=arr[l]; int i=f-1; for(int j=f;j<l;j++){ if(arr[j]<pi){ i++; swap(arr, i, j); } } swap(arr, i+1, l); } void quicksort(int arr[], int f, int l){ if(f<l){ int mid=pivot(arr, f, l); quicksort(arr, f, mid-1); quicksort(arr, mid+1, l); } } int main(){ int n; cin>>n; int array[n]; for(int i=0;i<n;i++){ cin>>array[i]; } quicksort(array, 0, n-1); for(int i=0;i<n;i++){ cout<<array[i]<<" "; } return 0; } Whats wrong in this code of quick sort, am not getting any output

In your pivot function, you forgot "return i+1" at the end. And instead of choosing the last element as a pivot always, choose a random element.