Okay this is looking good. There’s a lot of difference between Python and C. C got me questioning a lot.

Two things: Because of the nature of C, your code has to build and compile before running. 

The code below is a launch.json file that handles debugs libraries. 

{
    "version": "0.2.0",
    "configurations": [
      {
        "name": "Run C (no debug)",
        "type": "cppdbg",
        "request": "launch",
        "program": "${workspaceFolder}/clessons",
        "args": [],
        "stopAtEntry": false,
        "cwd": "${workspaceFolder}",
        "environment": [],
        "externalConsole": true,
        "MIMode": "lldb",
        "logging": {
          "engineLogging": false,
          "trace": false,
          "traceResponse": false
        },
        "miDebuggerPath": "/usr/bin/lldb"
      }
    ]
  }

int main(void)
{
    float first_test;
    first_test = 0.2f; 
    printf("%f\n", first_test); 
    return 0;
}

Every data type must be declared, every format should be specified. 

Saw some videos and the reason these guys added C to my path is for optimization.