Learn how to convert lowercase to uppercase in C without string.h using ASCII values
In this video, we will write a C program to convert lowercase letters to uppercase without using string.h functions like strupr().
Instead, we’ll use ASCII value manipulation inside a loop.
✅ Concepts you’ll learn:
Taking string input using fgets()
Iterating through characters of a string
Using ASCII values to convert lowercase → uppercase
String manipulation without string.h
👉 This program is beginner-friendly and shows how strings actually work in C behind the scenes.
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