C in 100 Seconds: Type Casting — Why 7/2 Is 3 and How to Fix It | Episode 15

Seven divided by two is three — not three point five. Both are ints, so C drops the decimal. Cast one side to float and you get the real answer. Going the other way, casting a double to int chops off everything after the decimal point. No rounding, just truncation. And every char is secretly an integer — capital A is sixty-five. The parentheses force the conversion. Know when C does it for you and when you need to be explicit. Student code: https://github.com/GoCelesteAI/c-in-100-seconds/tree/main/episode15 What You'll Learn: • Explicit casting with (float) and (int) • Why int / int drops the decimal • Truncation — double to int loses everything after the point • char is an int — A equals 65 in ASCII • Implicit vs explicit type conversion Next: Episode 16 — Header Files #c #programming #100seconds #learnc #typecasting #truncation #ascii #implicit #explicit #tutorial Tags c type casting, implicit cast c, explicit cast c, truncation c, ascii c, float to int, int division fix, c tutorial 2026, c beginner, 100 seconds, learn c, coding tutorial