Convert upper case into lower & lower case into upper in string using function & pointer

How to convert upper case into lower case and lower case into upper case in string using function and pointer in c programming. Connect With Me! Youtube: https://www.youtube.com/c/SanjayGupta_TechSchool Download App : techimage [Google Play] App Link: https://play.google.com/store/apps/details?id=tech.image&hl=en Facebook : https://www.facebook.com/tech.saanjaygupta Instagram: https://www.instagram.com/saanjay.gupta Email ID : [email protected] Website: https://www.techimage.in Call: +91 98290 11904