Why won't this C++ program compile and run? [duplicate] - c++

Question

This question already has answers here:
How can I compile and run C/C++ code in a Unix console or Mac terminal?
(19 answers)
Closed 6 years ago.
I tried to run a basic C++ file in the terminal:
#include <iostream>
using namespace std;
int main() {
cont << "This is my first C++ program!";
return 0
}
And then tried to run it in the terminal:
make learningCPP.cpp
make: *** No rule to make target `learningCPP.cpp'. Stop.
And tried:
make learningCPP
make: *** No rule to make target `learningCPP'. Stop.
And tried:
gcc learningCPP.cpp -o learningCPP.out
clang: error: no such file or directory: 'learningCPP.cpp'
clang: error: no input files
Here is the entire Bash/Clang file:
Last login: Mon May 25 07:49:21 on console
make learningCPP.cpp
make: *** No rule to make target `learningCPP.cpp'. Stop.
make learningCPP
make: *** No rule to make target `learningCPP'. Stop.
gcc learningCPP.cpp -o learningCPP.out
clang: error: no such file or directory: 'learningCPP.cpp'
clang: error: no input files
$ g++ -o lab21 learningCPP.cpp
-bash: $: command not found
$ ./lab21
-bash: $: command not found
./learningCPP.cpp
-bash: ./learningCPP.cpp: No such file or directory
./main
-bash: ./main: No such file or directory
$ g++ -o main learningCPP.cpp
-bash: $: command not found
cpp
make learningCPP.cpp
run
How can I fix it?

Answer 1

Judging by the errors, your file either isn't called learningCPP.cpp, or isn't in the directory you're trying to compile it from.
Rename it so it has that name, or change directory to its location, then the build command is
g++ learningCPP.cpp -o learningCPP
not gcc, and with no spurious $ before it. Alternatively, as long as the source file is present in the working directory, you could use make learningCPP.
Once that succeeds, run the program with
./learningCPP
although you'll have to read the new error messages, and use that to figure out how to fix the syntax errors, before it will compile.