passing-string-to-function

12-Strings/passing-strings-to-function.c

@@ -0,0 +1,50 @@
+/* 
+------------------------------------------------------------------------------------
+ Strings can be passed to a function in a similar way as arrays.
+
+ To pass a one dimensional string to a function as an argument we just write the name of the string array variable.
+
+ In the following example we have a string array variable str and it is passed to the function.
+
+ Method 1: Pass by value / without using pointers
+
+    void function(char str[]);  
+    char str[50];
+    function(str);     // Passing string to a function.    
+
+ Method 2: Using Pointers
+
+    void function(char* str);
+    char str[50];
+    function(str);     // Passing string to a function. 
+------------------------------------------------------------------------------------
+*/
+
+// Code here explaining concept with comments to guide
+#include <stdio.h>
+void sayWelcome(char str[]);  // Passing string as reference
+void sayGoodbye(char* str);  // Passing string as a pointer variable
+
+int main()
+{
+    char str[50];
+    printf("Enter string: ");
+    fgets(str, sizeof(str), stdin);
+    sayWelcome(str);  // Passing string to function
+    sayGoodbye(str);
+    return 0;
+}
+void sayWelcome(char str[])
+{
+    printf("Welcome, ");
+    puts(str);
+}
+void sayGoodbye(char* str){
+    printf("Good Bye, ");
+    puts(str);
+}
+/*
+------------------------------------------------------------------------------------
+ Challenge: Create a user defined function which accepts string as argument and counts the total number of character in the inputed string.
+------------------------------------------------------------------------------------
+*/