This showcases how to build a single file to create a runnable application.

This BUILD file shows that we want to build a C++ binary using the cc_binary rule provided by Bazel. In the cc_binary rule, name of the binary is specified in name attribute (in this example, it's hello-world), required source files to be built are provided in srcs attribute.

cc_binary(
    name = "hello-world",
    srcs = ["hello-world.cc"],
)

To build this example you use (notice that 3 slashes are required in windows)

bazel build //main:hello-world

# In Windows, note the three slashes

bazel build ///main:hello-world

If the build is successful, Bazel prints the following output:

____Loading complete.  Analyzing...
____Found 1 target...
____Building...
Target //main:hello-world up-to-date:
  C:/tools/msys64/tmp/_bazel_woden/vqeu6v3v/execroot/__main__/bazel-out/msvc_x64-fastbuild/bin/main/hello-world.exe
____Elapsed time: 0,400s, Critical Path: 0,01s

In the run log above you can see where the executable was built so you can locate it and use it.