Variadic function mandatory tasks complete

0x10-variadic_functions/0-sum_them_all.c

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+#include <stdarg.h>
+#include "variadic_functions.h"
+
+/**
+ * sum_them_all - sums of all its parameters.
+ * @n: number of parameters
+ *
+ * Return: sum of all parameters
+ */
+int sum_them_all(const unsigned int n, ...)
+{
+	int sum = 0;
+	unsigned int i;
+	va_list valist;
+
+	va_start(valist, n);
+	for (i = 0; i < n; i++)
+		sum += va_arg(valist, int);
+	va_end(valist);
+	return (sum);
+}

0x10-variadic_functions/1-print_numbers.c

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+#include <stdarg.h>
+#include <stdio.h>
+#include "variadic_functions.h"
+
+/**
+ * print_numbers - prints numbers, followed by a new line.
+ * @separator: separator to print between numbers
+ * @n: number of numbers to print
+ *
+ * Return: void
+ */
+void print_numbers(const char *separator, const unsigned int n, ...)
+{
+	unsigned int i;
+	int num;
+	va_list valist;
+
+	va_start(valist, n);
+	for (i = 0; i < n; i++)
+	{
+		num = va_arg(valist, int);
+		printf("%d", num);
+		if (i < n - 1 && separator)
+			printf("%s", separator);
+	}
+	printf("\n");
+	va_end(valist);
+}

0x10-variadic_functions/2-print_strings.c

@@ -0,0 +1,31 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include "variadic_functions.h"
+
+/**
+ * print_strings - prints strings, followed by a new line.
+ * @separator: separator to print between the strings
+ * @n: number of strings to print
+ *
+ * Return: void
+ */
+void print_strings(const char *separator, const unsigned int n, ...)
+{
+	unsigned int i;
+	char *str;
+	va_list valist;
+
+	va_start(valist, n);
+	for (i = 0; i < n; i++)
+	{
+		str = va_arg(valist, char *);
+		if (str)
+			printf("%s", str);
+		else
+			printf("(nil)");
+		if (i < n - 1 && separator)
+			printf("%s", separator);
+	}
+	printf("\n");
+	va_end(valist);
+}

0x10-variadic_functions/3-print_all.c

@@ -0,0 +1,92 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include "variadic_functions.h"
+
+/**
+ * print_c - print a char
+ * @c: char to print
+ *
+ * Return: void
+ */
+void print_c(va_list c)
+{
+	printf("%c", va_arg(c, int));
+}
+
+/**
+ * print_s - prints a string
+ * @s: string to print
+ *
+ * Return: void
+ */
+void print_s(va_list s)
+{
+	char *str = va_arg(s, char *);
+
+	if (str == NULL)
+		str = "(nil)";
+	printf("%s", str);
+}
+
+/**
+ * print_i - prints an int
+ * @i: int to print
+ *
+ * Return: void
+ */
+void print_i(va_list i)
+{
+	printf("%d", va_arg(i, int));
+}
+
+/**
+ * print_f - prints a float
+ * @f: float to print
+ *
+ * Return: void
+ */
+void print_f(va_list f)
+{
+	printf("%f", va_arg(f, double));
+}
+
+/**
+ * print_all - prints anything
+ * @format: list of argument types passed to the function
+ *
+ * Return: void
+ */
+void print_all(const char * const format, ...)
+{
+	unsigned int i, j;
+	print_t p[] = {
+		{"c", print_c},
+		{"s", print_s},
+		{"i", print_i},
+		{"f", print_f},
+		{NULL, NULL}
+	};
+	va_list valist;
+	char *separator = "";
+
+	va_start(valist, format);
+	i = 0;
+	while (format && format[i])
+	{
+		j = 0;
+		while (p[j].t != NULL)
+		{
+			if (*(p[j].t) == format[i])
+			{
+				printf("%s", separator);
+				p[j].f(valist);
+				separator = ", ";
+				break;
+			}
+			j++;
+		}
+		i++;
+	}
+	va_end(valist);
+	printf("\n");
+}

0x10-variadic_functions/README.md

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+Learning Objectives
+At the end of this project, you are expected to be able to explain to anyone, without the help of Google:
+
+General
+What are variadic functions
+How to use va_start, va_arg and va_end macros
+Why and how to use the const type qualifier
+

0x10-variadic_functions/_putchar.c

@@ -0,0 +1,13 @@
+#include <unistd.h>
+
+/**
+ * _putchar - writes the character c to stdout
+ * @c: The character to print
+ *
+ * Return: On success 1.
+ * On error, -1 is returned, and errno is set appropriately.
+ */
+int _putchar(char c)
+{
+	return (write(1, &c, 1));
+}

0x10-variadic_functions/variadic_functions.h

@@ -0,0 +1,21 @@
+#ifndef _VARIADIC_FUNCTIONS_H_
+#define _VARIADIC_FUNCTIONS_H_
+
+#include <stdarg.h>
+/**
+* struct print - print type with corresponding print function
+* @t: print type
+* @f: print function
+*/
+typedef struct print
+{
+	char *t;
+	void (*f)(va_list);
+} print_t;
+
+int sum_them_all(const unsigned int n, ...);
+void print_numbers(const char *separator, const unsigned int n, ...);
+void print_strings(const char *separator, const unsigned int n, ...);
+void print_all(const char * const format, ...);
+
+#endif /* _VARIADIC_FUNCTIONS_H_ */