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+//                           Example 8.8
+//s1,s2 and s3 are three string variables. Write a program to read two string-
+//constants in to s1 and s2 and compare whether they are equal or not,join-
+//them together. Then copy contents of s1 to variable s3. At the end program-
+// should print all three variables and their lengths 
+
+
+//Read data
+printf("Enter two string constants\n");
+[s1 s2]=scanf("%s %s");
+
+//Comparing two strings
+x=strcmp(s1,s2);
+if x~=0 then
+    printf("String are not equal\n");
+    //Concatinate two strings s1 and s2
+    s1=strcat([s1,s2]);
+else
+     printf("String are equal\n");
+end
+
+l1=length(s1);
+//Coping s1 to s3
+s3=strncpy(s1,l1);
+//finding length of strings
+l2=length(s2);
+l3=length(s3);
+//Output
+printf("s1 =  %s\t length = %d characters\n",s1,l1);
+printf("s2=  %s\t length = %d characters\n",s2,l2);
+printf("s3=  %s\t length = %d characters\n",s3,l3);
+