Need an extra line there.

Hope this works...

.travis.yml

@@ -0,0 +1,13 @@
+# Define the language
+language: c
+
+addons:
+    apt:
+        packages:
+            - build-essential
+            - cmake
+
+script:
+    - cd build/
+    - cmake -DCMAKE_BUILD_TYPE=Release ..
+    - make

CMakeLists.txt

@@ -1,13 +1,17 @@
 cmake_minimum_required(VERSION 2.6)
 project(MMMCalc)
 
-set(CMAKE_C_FLAGS "-Wall -Wextra -pedantic-errors")
+if(CMAKE_BUILD_TYPE STREQUAL "")
+    set(CMAKE_BUILD_TYPE RelWithDebInfo)
+endif()
+
+set(CMAKE_C_FLAGS "-std=gnu99 -Wall -Wextra -Werror -Wfatal-errors -Wmissing-declarations -pedantic-errors")
 set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS} -g -O0")
 set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS} -O3")
 set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS} -g -O3")
 set(CMAKE_C_FLAGS_MIN_SIZEREL "${CMAKE_C_FLAGS} -Os")
 
 set(SRCS
-    src/Main.c)
+    src/main.c)
 
 add_executable(mmmcalc ${SRCS})

README.md

@@ -1,5 +1,10 @@
 MMMCalc
 =======
+[![Build Status](https://travis-ci.org/Deathsbreed/MMMCalc.svg?branch=master)](https://travis-ci.org/Deathsbreed/MMMCalc)
+
+MMMCalc is a program I made after school one day after having to learn about Mean, Median, and Mode for the thousandth time. So instead of doing my actual homework I decided to make this program which would do it for me. Of course, the program with this is that your teachers often ask you to show your work. Well, fear not! For MMMCalc shows you **its** work. After it does its calculations, if you turn on _verbose mode_ (by using the `-v` argument) it will show you how MMMCalc got to that answer that it's giving you. After going through Mean, Median, and Mode (the reason why this program is called **MMM**Calc) I decided to add a few other basic statistical properties to it.
+
+I hope this helps someone to make their millionth time of doing Mean, Median, and Mode in school a little less of a pain in the ass.
 
 ### Compiling
 MMMCalc uses [CMake](http://cmake.org/) to compile. Please install the C development tools and CMake (along with whichever build script you plan on having CMake generate) in order to run this command.

src/Main.c

@@ -1,14 +0,0 @@
-#include <stdio.h>
-
-// 0 = false;
-// 1 = true;
-char version[16] = "v0.5";
-int verbose = 0;
-
-int main(int argc, char **argv) {
-    printf("MMMCalc %s, Copyright (c) 2016 Nicolás A. Ortega.\n", version);
-    printf("This program comes with ABSOLUTELY NO WARRANTY.\n");
-    printf("This program is free software and you are welcome to redistribute\n");
-    printf("under the terms and conditions of the GNU GPLv3 or higher.\n\n");
-    return 0;
-}

src/main.c

@@ -0,0 +1,128 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdbool.h>
+#include <getopt.h>
+#include <unistd.h>
+
+// Version string
+const char *version = "v0.5";
+// Whether or not the calculations should be verbose
+bool verboseFlag = false;
+
+// Function that prints help info
+inline void printHelp();
+
+int main(int argc, char **argv) {
+    // There should always be at least be 2 arguments and no more than 4
+    if(argc <= 1) {
+        fprintf(stderr, "No arguments were provided. Use `-h' for help.\n");
+        return 1;
+    }
+
+    // Variable where the argument is stored
+    int arg;
+    // If help info should be printed
+    bool helpFlag = false;
+    // If version info should be printed
+    bool versionFlag = false;
+    // The file to read the numbers from
+    char *infile = NULL;
+
+    while((arg = getopt(argc, argv, "hvVf:")) != -1) {
+        switch(arg) {
+            case 'h':
+                // Only 2 arguments can be used
+                if(argc != 2) {
+                    fprintf(stderr, "Invalid use of arguments. Use `-h' for help.\n");
+                    return 1;
+                }
+                helpFlag = true;
+                break;
+
+            case 'v':
+                verboseFlag = true;
+                break;
+
+            case 'V':
+                // Only 2 arguments can be used
+                if(argc != 2) {
+                    fprintf(stderr, "Invalid use of arguments. Use `-h' for help.\n");
+                    return 1;
+                }
+                versionFlag = true;
+                break;
+
+            case 'f':
+                // There needs to be between 3 and 4 arguments
+                if(argc > 4 || argc < 3) {
+                    fprintf(stderr, "Invalid use of arguments. Use `-h' for help.\n");
+                }
+                // Set the input file
+                infile = optarg;
+                break;
+
+            case '?':
+                if(optopt == 'f') {
+                    fprintf(stderr, "Option -%c requires an argument.\n", optopt);
+                } else if(isprint(optopt)) {
+                    fprintf(stderr, "Unknown option `-%c'.\n", optopt);
+                } else {
+                    fprintf(stderr, "Unknown character `\\x%x'.\n", optopt);
+                }
+                return 1;
+
+            default:
+                // If we get anything else that's weird just abort
+                abort();
+        }
+    }
+
+    if(helpFlag) {
+        printHelp();
+        return 0;
+    } else if(versionFlag) {
+        printf("%s\n", version);
+        return 0;
+    }
+
+    // Print copyright & license information
+    printf("MMMCalc %s, Copyright (c) 2016 Nicolás A. Ortega.\n", version);
+    printf("This program comes with ABSOLUTELY NO WARRANTY.\n");
+    printf("This program is free software and you are welcome to redistribute\n");
+    printf("under the terms and conditions of the GNU GPLv3 or higher.\n\n");
+
+    // Open a file as read only
+    FILE *numfile = fopen(infile, "r");
+    // Temporary variable to see how many numbers are in this file
+    double num;
+    // The size of the coming nums array
+    int size = 0;
+    // Get the size for the array
+    while(fscanf(numfile, "%lf", &num) == 1) size++;
+    rewind(numfile);
+    printf("There are %d numbers in the file.\n", size);
+    // Create the array with that size
+    double nums[size];
+    for(int i = 0; i < size; i++) {
+        // Store result of fscanf in err
+        int err = fscanf(numfile, "%lf", &nums[i]);
+        // If fscanf returned error exit out of here
+        if(err != 1) {
+            fprintf(stderr, "Error reading entire file.\n");
+            return 1;
+        }
+        // If not let's continue printing
+        printf("%f\n", nums[i]);
+    }
+    return 0;
+}
+
+void printHelp() {
+    printf("Usage: mmmcalc [options]\n");
+    printf("Options:\n");
+    printf(" -f <file> -- The file to read variables from.\n");
+    printf(" -h -- Show this help information.\n");
+    printf(" -v -- Be verbose, prints the equations used.\n");
+    printf(" -V -- Print the version number.\n");
+}