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Lab9/Task4.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <math.h>
+
+/*
+ * These are the function prototypes
+ */
+
+int valDec(char *string);
+int valHex(char *string);
+int valOct(char *string);
+int valBin(char *string);
+
+int main()
+{
+
+    int p, base;
+    char string[100];
+
+    printf("Please enter the string:\n");
+    scanf("%s", string);
+
+    printf("Please Specify the base you would like to validate in\n1-Decimal\t 2-Hexadecimal\t\t 3-Octal\t 4-Binary\n");
+    scanf("%d", &base);
+
+    switch (base)
+    {
+
+    case 1:
+
+        p = valDec(string);
+        if (p == 0)
+        {
+            printf("The given input string is in fact, a valid decimal integer");
+        }
+        else
+        {
+            printf("The given input string is NOT a valid decimal integer");
+        }
+        break;
+
+    case 2:
+
+        p = valHex(string);
+        if (p == 0)
+        {
+            printf("The given input string is in fact, a valid Hexadecimal");
+        }
+        else
+        {
+            printf("The given input string is NOT a valid Hexadecimal");
+        }
+        break;
+
+    case 3:
+
+        p = valOct(string);
+        if (p == 0)
+        {
+            printf("The given input string is in fact, a valid Octadecimal");
+        }
+        else
+        {
+            printf("The given input string is NOT a valid Octadecimal");
+        }
+        break;
+
+    case 4:
+
+        p = valBin(string);
+        if (p == 0)
+        {
+            printf("The given input string is in fact, a valid Binary number");
+        }
+        else
+        {
+            printf("The given input string is NOT a valid Binary number");
+        }
+        break;
+
+    default:
+
+        printf("Error. Invalid choice!");
+        break;
+    }
+
+    return 0;
+}
+
+int valDec(char string[100])
+{
+    int length, i, val;
+
+    length = strlen(string);
+
+    for (i = 0; i < length; i++)
+    {
+        if (!isdigit(string[i]))
+        {
+            val = 1;
+        }
+        else
+        {
+            val = 0;
+        }
+    }
+
+    return val;
+}
+
+int valHex(char string[100])
+{
+    int length, i, val;
+
+    length = strlen(string);
+
+    for (i = 0; i < length; i++)
+    {
+        if (!isxdigit(string[i]))
+        {
+            val = 1;
+        }
+        else
+        {
+            val = 0;
+        }
+    }
+
+    return val;
+}
+
+int valOct(char string[100])
+{
+    int length, i, val;
+
+    length = strlen(string);
+
+    for (i = 0; i < length; i++)
+    {
+        if (string[i] == '0' || string[i] == '1' || string[i] == '2' || string[i] == '3' || string[i] == '4' || string[i] == '5' || string[i] == '6' || string[i] == '7')
+        {
+            val = 0;
+        }
+        else
+        {
+            val = 1;
+        }
+    }
+
+    return val;
+}
+
+int valBin(char string[100])
+{
+    int length, i, val;
+
+    length = strlen(string);
+
+    for (i = 0; i < length; i++)
+    {
+        if (string[i] == '0' || string[i] == '1')
+        {
+            val = 0;
+        }
+        else
+        {
+            val = 1;
+        }
+    }
+
+    return val;
+}