added files

Makefile

@@ -0,0 +1,2 @@
+sequencer: sequencer.c
+	gcc sequencer.c -O3 -o sequencer -ansi

colors.h

@@ -0,0 +1,29 @@
+#ifndef COLORS
+#define COLORS
+
+#define RED       "\x1B[31m"
+#define BLUE      "\x1B[34m"
+#define GREEN     "\x1B[32m"
+#define YELLOW    "\x1B[33m"
+#define MAGENTA   "\x1B[35m"
+#define DEFAULT   "\x1B[39m"
+
+#ifdef __WIN32__
+	#include <windows.h>
+	#ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
+		#define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x0004
+	#endif
+	DWORD dwMode;
+	DWORD 
+	enableColorsOnWindows()
+	{
+		HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
+		if (hOut == INVALID_HANDLE_VALUE) return GetLastError();
+		dwMode = 0;
+		if (!GetConsoleMode(hOut, &dwMode))return GetLastError();
+		dwMode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+		if (!SetConsoleMode(hOut, dwMode))return GetLastError();
+		return 0;
+	}
+#endif /*end windows if*/
+#endif /*end colors def*/

sequencer.c

@@ -0,0 +1,127 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define MAXINPUT 3
+
+#include "colors.h"
+#define COLORS
+
+typedef enum {ARITHMETIC,GEOMETRIC,PRIME,UNKNOWN} Sequence;
+
+unsigned int i,position,count;
+float raised,number,term,numbers[10];
+
+void
+getInput()
+{
+    printf("Kindly input " RED "first three " DEFAULT "numbers of sequence " YELLOW "below " DEFAULT  "using <" GREEN  "spacebar" DEFAULT  "> to separate\n");
+	for (i = 0; i < MAXINPUT; i++){
+        if(!scanf("%f",&number)){
+			printf(RED"ERROR: " DEFAULT "Unable to get input\n");
+			exit(EXIT_FAILURE);
+		}
+        numbers[i] = number;
+    }
+}
+
+unsigned int
+checkPrime
+(unsigned int number)
+{
+    count = 1;
+    for(i=2; i<=number/2; i++){
+        if(number%i == 0){
+            count=0;
+            break;
+        }
+    }
+    if(number == 1) count = 0;
+    return count;
+}
+
+Sequence
+determineSequence()
+{
+	numbers[MAXINPUT] = numbers[MAXINPUT - 1] - numbers[MAXINPUT - 2];
+	numbers[MAXINPUT + 1] = numbers[MAXINPUT - 2] - numbers[MAXINPUT - 3];
+	if (numbers[MAXINPUT] == numbers[MAXINPUT + 1])return ARITHMETIC;
+	numbers[MAXINPUT] = numbers[MAXINPUT - 1]/numbers[MAXINPUT - 2];
+	numbers[MAXINPUT + 1] = numbers[MAXINPUT - 2]/numbers[MAXINPUT - 3];
+	if (numbers[MAXINPUT] == numbers[MAXINPUT + 1])return GEOMETRIC;
+	if (checkPrime((unsigned int)numbers[0]))return PRIME;
+	else return UNKNOWN;
+}
+
+void
+prompt()
+{
+	printf(MAGENTA "Position " DEFAULT "of term: " BLUE);
+	if(!scanf("%u",&position)){
+		printf(RED"ERROR: "DEFAULT " Unable to get input\n");
+        exit(EXIT_FAILURE);
+	}
+	printf(DEFAULT);
+}
+float
+raise
+(float base, unsigned int exponent)
+{
+	raised = 1;
+	for (i = 0; i < exponent; i++) raised *= base;
+	return raised;
+}
+
+/*=======================WIP=======================
+unsigned int
+primeAtN(unsigned int number,unsigned int position)
+{
+	i = 0;
+	while(i != position){
+		if(checkPrime(number)){
+			number++;
+			i++;
+		}
+		else number++;
+	}
+	return number;
+}
+==================================================*/
+
+int
+sequencer()
+{
+	switch (determineSequence()){
+	case ARITHMETIC:
+		prompt();
+		term = numbers[0] + (position - 1) * numbers[MAXINPUT];
+	break;
+
+	case GEOMETRIC:
+		prompt();
+		term = numbers[0] * raise(numbers[MAXINPUT],position - 1);
+	break;
+
+	case PRIME:
+		prompt();
+		printf(RED"WIP:"DEFAULT"prime number finder not in its prime yet ;)\n");
+	return 0;
+
+	case UNKNOWN:
+		printf(YELLOW "Sorry," DEFAULT " could " RED "not" DEFAULT " determine type of" BLUE " sequence\n" DEFAULT);
+	return 0;
+	}
+
+	printf(BLUE "Term " DEFAULT "is: " GREEN "%g\n" DEFAULT, term);
+	return 0;
+}
+
+int
+main()
+{
+	#ifdef __WIN32__
+		enableColorsOnWindows();
+	#endif
+	getInput();
+	sequencer();
+	return 0;
+}