Update Hello world

Hello world

@@ -1,6 +1,7 @@
 #include <stdio.h>
 int main()
 {
+   //Print function to print hello world
    printf("Hello, World!");
    return 0;
 }

frequency of a character

@@ -4,11 +4,15 @@ int main()
    char str[1000], ch;
    int i, frequency = 0;
    print("Enter a string: ");
+   //Main string
    gets(str);
    printf("Enter a character to find the frequency: ");
+   //Character whose frequency we want to get
    scanf("%c",&ch);
    for(i = 0; str[i] != '\0'; ++i)
    {
+       //Whenever we are getting the character ch in the string
+       //we are incrementing the frequency
        if(ch == str[i])
            ++frequency;
    }

length of a string

@@ -4,7 +4,10 @@ int main()
     char s[1000];
     int i;
     printf("Enter a string: ");
+    //Our string
     scanf("%s", s)
+    //With the help of this loop we are able to count the number of characters in the string
+    //untill we reach the end
     for(i = 0; s[i] != '\0'; ++i)
     printf("Length of string: %d", i);