Programming Homework 1 added

Programming HW1/main.c

+/* 
+ * File:   homework1.c
+ * Author: Tran Minh Huy Vu
+ *
+ * Created on October 4, 2018, 1:50 PM
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+void createTable() {
+    printf("╒═══╤═══════════════╤═══════════════╕\n");
+    printf("│ nr│       x       │       y       │\n");
+    printf("╞═══╪═══════════════╪═══════════════╡\n");
+}
+
+int number = 1;
+void addToTable(float a, float b) {
+    if (isnan(b)) {
+        if (a < 10) {
+            printf("│ %d │    %f   │      NaN     │\n", number, a);
+        } else if (a < 100) {
+            printf("│ %d │   %f   │   NaN   │\n", number, a);
+        }
+    } else if (number < 10) {
+        if (a < 10) {
+            if (b < 10) printf("│ %d │    %f   │    %f   │\n", number, a, b);
+            else if (b < 100) printf("│ %d │    %f   │   %f   │\n", number, a, b);
+        } else if (a < 100) {
+            if (b < 10) printf("│ %d │   %f   │    %f   │\n", number, a, b);
+            else if (b < 100) printf("│ %d │   %f   │   %f   │\n", number, a, b);
+        }
+    } else if (number < 100) {
+        if (a < 10) {
+            if (b < 10) printf("│%d │    %f   │    %f   │\n", number, a, b);
+            else if (b < 100) printf("│ %d│    %f   │   %f   │\n", number, a, b);
+        } else if (a < 100) {
+            if (b < 10) printf("│%d │   %f   │    %f   │\n", number, a, b);
+            else if (b < 100) printf("│%d │   %f   │   %f   │\n", number, a, b);
+        }
+    }
+    number++;
+}
+
+void endTable() {
+    printf("╘═══╧═══════════════╧═══════════════╛");
+}
+
+int main() {
+    float x, y, lim, incre;
+    printf("Please input starting value: ");
+    scanf("%f", &x);
+    
+    printf("Please input increment value: ");
+    scanf("%f", &incre);
+    if (incre <= 0) {
+        printf("Increment have to be > 0");
+        return 1;
+    }
+    
+    printf("Please input limit value: ");
+    scanf("%f", &lim);
+    if (lim <= x) {
+        printf("Limit have to be bigger than starting value");
+        return 1;
+    }
+    
+    printf("Result for: ln(x + 5) / sqrt(7 + 5x + x^2)\n\n");
+    createTable();
+    int tooMuch = 0;
+    for (float i = 0; i < lim && !tooMuch; i = i + incre) {
+        y = log(i + 5) / sqrt(7 + 5*i + i*i);
+        addToTable(i, y);
+        if (isnan(y)) y = lim - 1;
+        if (number >= 16) tooMuch = 1;
+    }
+    endTable();
+    return (EXIT_SUCCESS);
+}
+