harish9

*ptr = 'hello world"; if we try to modify the content the result is undefined when i worked with gcc in unix. But i can modify the content in Turbo c. How it worked i got confussed.

You are comparing two strings str1 & str2 character by character. When character are same if condition is satisfied and prints equal, When character are not equal it comes else part and prints unequal. When compairing character by character use running pointer.

Nichito is exactly right... add double quotes("you") like this it pass the string and prints