Programs · Program 5-8
Q.Program 5-8: Program to show explicit type casting.
Rajasthan RbseTextbookSubjective· 2mImportance★★★★★est
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Start your 14-day free trial to unlock the full solution →Explicit type casting uses int(), float() or str() to force a value into the type you need — here a string mark is cast to int for arithmetic, and the float total is cast back to int.
The idea (explicit type casting). Casting is the programmer explicitly changing a value's type by calling a conversion function. You need it whenever the type you have does not support the operation you want — the everyday case being numeric text (e.g. from input()) that must become a real number before arithmetic.
Program
# prog5-8.py
# Program to show explicit type casting
marksStr = "78" # a string, e.g. as returned by input()
marks = int(marksStr) # explicit cast: str -> int
bonus = 2.5
totalMarks = marks + bonus # 78 + 2.5
print(totalMarks)
print(type(totalMarks))
print(int(totalMarks)) # explicit cast: float -> int (truncates)
Expected output
80.5
<class 'float'>
80
Key lines
int(marksStr)— the explicit cast that turns the string"78"into the integer 78. Without it,marksStr + bonuswould raiseTypeError(cannot addstrandfloat). …
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