added: 2-int_index.c

Author: hackerSa3edy

0x0F-function_pointers/2-int_index.c

@@ -0,0 +1,25 @@
+#include "function_pointers.h"
+
+/**
+ * int_index - searches for an integer.
+ *
+ * @array: array to search in.
+ * @size: size of the array.
+ * @cmp: pointer to check the searched value.
+ *
+ * Return: index of the first elem found, (-1) if not found.
+ */
+int int_index(int *array, int size, int (*cmp)(int))
+{
+	int index = 0;
+	int result = -1;
+
+	while (array != NULL && cmp != NULL && size > 0 && index < size)
+	{
+		result = cmp(array[index]);
+		if (result == 1)
+			break;
+		index++;
+	}
+	return (result == 1 ? index : -1);
+}

0x0F-function_pointers/2-main.c

@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include "function_pointers.h"
+
+/**
+ * is_98 - check if a number is equal to 98
+ * @elem: the integer to check
+ *
+ * Return: 0 if false, something else otherwise.
+ */
+int is_98(int elem)
+{
+	return (98 == elem);
+}
+
+/**
+ * is_strictly_positive - check if a number is greater than 0
+ * @elem: the integer to check
+ *
+ * Return: 0 if false, something else otherwise.
+ */
+int is_strictly_positive(int elem)
+{
+	return (elem > 0);
+}
+
+
+/**
+ * abs_is_98 - check if the absolute value of a number is 98
+ * @elem: the integer to check
+ *
+ * Return: 0 if false, something else otherwise.
+ */
+int abs_is_98(int elem)
+{
+	return (elem == 98 || -elem == 98);
+}
+
+/**
+ * main - check the code
+ *
+ * Return: Always 0.
+ */
+int main(void)
+{
+	int array[20] = {0, -98, 98, 402, 1024, 4096, -1024, -98, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 98};
+	int index;
+
+	index = int_index(array, 20, is_98);
+	printf("%d\n", index);
+	index = int_index(array, 20, abs_is_98);
+	printf("%d\n", index);
+	index = int_index(array, 20, is_strictly_positive);
+	printf("%d\n", index);
+	return (0);
+}

0x0F-function_pointers/function_pointers.h

@@ -5,6 +5,6 @@
 int _putchar(char);
 void print_name(char *, void (*)(char *));
 void array_iterator(int *, size_t, void (*)(int));
-
+int int_index(int *, int, int (*)(int));
 
 #endif /* FUNCTION_POINTERS_H */