update

Author: Shell-thon

0x05-pointers_arrays_strings/100-atoic.c

@@ -0,0 +1,32 @@
+#include "main.h"
+/**
+ * _atoi - Convert string to integer.
+ * @s: Pointer to a character string.
+ *
+ * Return: void.
+ */
+
+int _atoi(char *s)
+{
+int sign;
+unsigned int num;
+char *temp;
+
+temp = s;
+num = 0;
+sign = 1;
+while (*temp != '\0' && (*temp < '0' || *temp > '9'))
+{
+if (*temp == '-')
+sign *= -1;
+temp++;
+}
+if (*temp != '\0')
+{
+do {
+num = num * 10 + (*temp - '0');
+temp++;
+} while (*temp >= '0' && *temp <= '0');
+}
+return (num * sign);
+}