Gcc Error Cannot Be Used As A Function
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Cannot Be Used As A Function Arduino
about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack cannot be used as a function mathematica Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping arduino error expression cannot be used as a function each other. Join them; it only takes a minute: Sign up “cannot be used as a function error” up vote 8 down vote favorite 1 I am writing a simple program that uses functions found in different .cpp files. All of my prototypes are contained in a header file. I pass some of the functions into other
Variable Cannot Be Used As A Function
functions and am not sure if I am doing it correctly. The error I get is "'functionname' cannot be used as a function". The function it says cannot be used is the growthRate function and the estimatedPopulation function. The data comes in through an input function (which I do think is working). Thanks! header file: #ifndef header_h #define header_h #include #include #include using namespace std; //prototypes void extern input(int&, float&, float&, int&); float extern growthRate (float, float); int extern estimatedPopulation (int, float); void extern output (int); void extern myLabel(const char *, const char *); #endif growthRate function: #include "header.h" float growthRate (float birthRate, float deathRate, float growthrt) { growthrt = ((birthRate) - (deathRate)) return growthrt; } estimatedPopulation function: #include "header.h" int estimatedPopulation (int currentPopulation, float growthrt) { return ((currentPopulation) + (currentPopulation) * (growthrt / 100); } main: #include "header.h" int main () { float birthRate, deathRate, growthRate; char response; int currentPopulation, years, estimatedPopulation; do //main loop { input (currentPopulation, birthRate, deathRate, years); growthRate (birthRate, deathRate, growthrt); estimatedPopulation (currentPopu
here for a quick overview of the site rand cannot be used as a function c++ Help Center Detailed answers to any questions you might exit cannot be used as a function have Meta Discuss the workings and policies of this site About Us Learn more
Arduino Function
about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users http://stackoverflow.com/questions/4412619/cannot-be-used-as-a-function-error Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up error: '__pred' cannot be used as a function up vote 0 down http://stackoverflow.com/questions/8260376/error-pred-cannot-be-used-as-a-function vote favorite I can't find what I'm doing wrong here. The function eta does what I ask but when I use it in the loop I get the attached error. bool eta(map map_jets, string jet){ return( fabs(map_jets[jet].PseudoRapidity()) > 2.5 ); } and then vector > jets_pt( vec_jets.size() ); for( vector >::iterator it = jets_pt.begin(); it != jets_pt.end(); ++it) jets_pt.erase(remove_if(jets_pt.begin(),jets_pt.end(),eta(map_jets,it1->first)),jets_pt.end); I get the error /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_algo.h: In function '_OutputIterator std::remove_copy_if(_InputIterator, _InputIterator, _OutputIterator, _Predicate) [with _InputIterator = __gnu_cxx::__normal_iterator, std::allocator >, double>*, std::vector, std::allocator >, double>, std::allocator, std::allocator >, double> > > >, _OutputIterator = __gnu_cxx::__normal_iterator, std::allocator >, double>*, std::vector, std::allocator >, double>, std::allocator, std::allocator >, double> > > >, _Predicate = bool]': /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_algo.h:1291: instantiated from '_ForwardIterator std::remove_if(_ForwardIterator, _ForwardIterator, _Predicate) [with _ForwardIterator = __gnu_cxx::__normal_iterator, std::allocator >, double>*, std::vector, std::allocator >, double>, std::allocatorNew Topic/Question Reply 2 Replies - 17680 Views - Last Post: 03 March 2009 - 07:25 PM Rate Topic: #1 thwhisler New D.I.C Head Reputation: 1 http://www.dreamincode.net/forums/topic/90425-error-cannot-be-used-a-function/ Posts: 11 Joined: 20-February 09 error: cannot be used a function Posted 03 https://gcc.gnu.org/ml/gcc-help/2011-01/msg00267.html March 2009 - 06:54 PM I am writing a program that will calculate the determinates of 2 by 2 or 3 by 3 matrixes. This is what i currently have: #include #include using namespace std; double det3(double a1, double a2, double a3, double a4, double a5, double a6, double cannot be a7, double a8, double a9); double det2(double b1, double b2, double b3, double b4); double a1, a2, a3, a4, a5, a6, a7, a8, a9; int main() { int cType; double det; cout << "What is the size of the matrix? "; cin >> cType; cout << "\nEnter the terms going across\n"; if (cType == 2) { cin >> a1; cin >> a2; cin cannot be used >> a3; cin >> a4; det = det2(a1, a2, a3, a4); } else if (cType == 3) { cin >> a1; cin >> a2; cin >> a3; cin >> a4; cin >> a5; cin >> a6; cin >> a7; cin >> a8; cin >> a9; det = det3(a1, a2, a3, a4, a5, a6, a7, a8, a9); } else { cout << "Not a supported option.\n"; exit(1); } cout << "The determinant is " << det << endl; return 0; } double det3(double a1, double a2, double a3, double a4, double a5, double a6, double a7, double a8, double a9) { double det1, det2, det3, det5; det1 = (a1 * det2(a5, a6, a8, a9)); det2 = (a4 * det2(a2, a3, a8, a9)); det3 = (a7 * det2(a2, a3, a5, a6)); det5 = det1 - det2 + det3; return det5; } double det2(double b1, double b2, double b3, double b4) { double det4; det4 = (b1 * b4) - (b3 * b2); return det4; } When i compile it, I get the following errors: determinant.cpp: In function ‘double det3(double, double, double, double, double, double, double, double, double)': determinant.cpp:62: error: ‘det2' canno
g++ cross distro compilation problem From: Nick Stokes To: gcc-help at gcc dot gnu dot org Date: Tue, 18 Jan 2011 19:39:27 -0500 Subject: g++ cross distro compilation problem Dear all: I have very specific trouble with building GCC for our compute clusters. Our setup is a fairly common compute cluster environment, where users login to a front-end and compile their codes. Then they submit to a batch queue to run them on ?the compute nodes. This is not exactly a cross compilation problem as the hardware on the compute nodes and the login node are fairly similar (both x86_64). The particular GNU/Linux distro on them, however, don't match (a fact we unfortunately can do nothing about). The login node runs OpenSUSE 11.3, and the compute nodes are CentOS 5.5. (and these are upgraded time and again) The current distro versions of GCC (4.5.0 for login, and 4.1.2 for computes) are incompatible and insufficient anyway since we need to maintain multiple versions of GCC to address user needs. The idea was to install all of 4.3, 4.4 and 4.5 versions on different prefixes (/opt/gcc/4.3, /opt/gcc/4.4 and /opt/gcc/4.5, respectively) and NFS mount these on the login node for users. We stage the compilers, install, and test them on the compute nodes. Everything seems ok. But on the login node the C++ compiler spits out the following errors (for a simple hello world program): $ g++ hello.cpp In file included from /opt/gcc/4.4.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../../include/c++/4.4.3/bits/localefwd.h:42, from /opt/gcc/4.4.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../../include/c++/4.4.3/ios:42, from /opt/gcc/4.4.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../../include/c++/4.4.3/ostream:40, from /opt/gcc/4.4.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../../include/c++/4.4.3/iostream:40, from main.cpp:1: /opt/gcc/4.4.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../../include/c++/4.4.3/x86_64-unknown-linux-gnu/bits/c++locale.h:52: error: 'uselocale' was not declared in this scope /opt/gcc/4.4.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../../include/c++/4.4.3/x86_64-unknown-linux-gnu/bits/c++locale.h:52: error: invalid type in declaration before ';' token /opt/gcc/4.4.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../../include/c++/4.4.3/x86_64-unknown-linux-gnu/bits/c++locale.h: In function 'int std::__convert_from_v(__locale_struct* const&, char*, int, const char*, ...)': /opt/gcc/4.4.3/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../../include/c++/4.4.3/x86_64-unknown-li