install/uninstall options

Tui

.gitignore

@@ -50,3 +50,7 @@ modules.order
 Module.symvers
 Mkfile.old
 dkms.conf
+
+# quadratic executable
+quadratic
+quadratic-tui

README.md

@@ -1,5 +1,3 @@
 # quadratic
 
 Simple cli calculator that computes real and complex roots of a quadratic.
-<br>
-Make a project do one thing good rather than do alot that isn't. I learned from my past projects and the best way to code is to KISS.

makefile

@@ -1,2 +1,12 @@
+DESTDIR ?= /usr/bin
+
 all:
-	gcc quadratic.c -lm -Wall -O3 -o "bin-quadratic.out"
+	gcc quadratic.c -lm -Wall -O3 -o "quadratic"
+	cp quadratic-tui.sh quadratic-tui
+
+install:
+	install -Dm755 quadratic $(DESTDIR)/
+	install -Dm755 quadratic-tui $(DESTDIR)/
+
+uninstall:
+	rm -f $(DESTDIR)/{quadratic,quadratic-tui}

quadratic-tui.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+ARG_A=$(whiptail --inputbox "Please enter the value for \"a\":" 10 50 --title "Quadratic Calculator" 3>&1 1>&2 2>&3)
+                                                                        
+exitstatus=$?
+if [  $exitstatus != 0 ]; then
+echo "User cancelled input."
+exit
+fi
+
+ARG_B=$(whiptail --inputbox "Please enter the value for \"b\":" 10 50 --title "Quadratic Calculator" 3>&1 1>&2 2>&3)
+                                                                        
+exitstatus=$?
+if [  $exitstatus != 0 ]; then
+echo "User cancelled input."
+exit
+fi
+
+ARG_C=$(whiptail --inputbox "Please enter the value for \"c\":" 10 50 --title "Quadratic Calculator" 3>&1 1>&2 2>&3)
+                                                                        
+exitstatus=$?
+if [  $exitstatus != 0 ]; then
+echo "User cancelled input."
+exit
+fi
+
+quadratic $ARG_A $ARG_B $ARG_C

quadratic.c

@@ -1,47 +1,42 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
+#include <string.h>
 
-int main()
+int main(int num_arg, char **args)
 {
-    system("clear");
-    printf("\n ~~ Quadratic Calculator ~~\n");
-    printf("             ̲ ̲ ̲ ̲ ̲ ̲\n");
-    printf("        ̲-̲b̲±̲√̲b̲̲²̲̲-̲4̲a̲c̲\n");
-    printf("             2a\n\n");
-
     double num_A, num_B, num_C;
 
-    printf("Please enter the value for \"a\":\n");
-    scanf("%lf", &num_A);
-    printf("Please enter the value for \"b\":\n");
-    scanf("%lf", &num_B);
-    printf("Please enter the value for \"c\":\n");
-    scanf("%lf", &num_C);
-
-    double radical = pow(num_B, 2) + (-4 * num_A * num_C);
-    printf("\nUnder the radical: %f\n", radical);
-    if (radical < 0.0)
+    if (num_arg <= 1)
     {
-        // roots are complex
-        printf("Roots are complex.\n");
-
-        double real_part = (-num_B) / (2 * num_A);
-        double imaginary_part = sqrt(radical * -1.0) / (2 * num_A);
-
-        printf("The zeros are: %f+%fi and %f-%fi.\n", real_part, imaginary_part, real_part, imaginary_part);
+        system("quadratic-tui"); // make sure it is in PATH along with "quadratic" bin
     }
     else
     {
-        // roots are real
-        printf("Roots are real.\n");
+        num_A = atof(args[1]);
+        num_B = atof(args[2]);
+        num_C = atof(args[3]);
 
-        double numerator_1 = (-num_B) + sqrt(radical);
-        double numerator_2 = (-num_B) - sqrt(radical);
-        double zero_1_ptr = numerator_1 / (2 * num_A);
-        double zero_2_ptr = numerator_2 / (2 * num_A);
+        double radical = pow(num_B, 2) + (-4 * num_A * num_C);
 
-        printf("The zeros are: %f and %f.\n", zero_1_ptr, zero_2_ptr);
+        if (radical < 0.0)
+        {
+            // roots are complex
+            double real_part = (-num_B) / (2 * num_A);
+            double imaginary_part = sqrt(radical * -1.0) / (2 * num_A);
+
+            printf("%g+%gi\t %g-%gi\n", real_part, imaginary_part, real_part, imaginary_part);
+        }
+        else
+        {
+            // roots are real
+            double numerator_1 = (-num_B) + sqrt(radical);
+            double numerator_2 = (-num_B) - sqrt(radical);
+            double zero_1_ptr = numerator_1 / (2 * num_A);
+            double zero_2_ptr = numerator_2 / (2 * num_A);
+
+            printf("%g\t %g\n", zero_1_ptr, zero_2_ptr);
+        };
     };
     return 0;
 };