Update Hello world

Hello world

@@ -1,6 +1,2 @@
-#include <stdio.h>
-int main()
-{
-   printf("Hello, World!");
-   return 0;
-}
+#to print the "Hello World in python language
+print("Hello, World!!")

frequency of a character

@@ -2,15 +2,15 @@ int main()
 {
    char str[1000], ch
    int i, frequency = 0
-   print("Enter a string: ");
+   print("Enter the string in which you want to find the character frequency: ");
    gets(str);
-   printf("Enter a character to find the frequency: ");
+   printf("Enter a character to find the frequency in the given string: ");
    scanf("%c",&ch);
    for(i = 0; str[i] != '\0'; ++i)
    {
        if(ch == str[i])
            ++frequency;
    }
-   printf("Frequency of %c = %d", ch, frequency);
+   printf("Frequency of %c = %d in the string provided", ch, frequency);
    return 0;
 }

length of a string

@@ -3,9 +3,9 @@ int main()
 {
     char s[1000];
     int i;
-    print("Enter a string: ")
+    print("Enter a string for which you need to find the length: ")
     scan("%s", s)
     for(i = 0; s[i] != '\0'; ++i)
-    printf("Length of string: %d", i);
+    printf("Length of the provided string: %d", i);
 
 }

pgm to read a line

@@ -1,17 +1,18 @@
 #include <stdio.h>
-#include <stdlib.h>
+#include <stdlib.h>     //for exit() 
 int main()
 {
-    char c[1000]
+    char ch[1000]
     FILE *fptr;
     if ((fptr = fopen("program.txt", "r")) == NULL)
     {
-        print("Error! opening file")
+        print("Error! opening file")  // program exits if file pointer returns NULL
         exit(1)      
     }
 
-    scanf(fptr,"%[^\n]", c);
-    printf("Data from the file:\n%s", c);
+   // reads text untill newline is encountered
+    scanf(fptr,"%[^\n]", ch);
+    printf("Data from the file:\n%s", ch);
     close(fptr)
 
     return 0;