C Programming
What is the correct value to return to the operating system upon the successful completion of a program?

Program do no return a value.
1
-1
2

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C Programming
C preprocessor

Takes care of macros
Takes care of conditional compilation
Takes care of include files
All of these
Acts before compilation

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C Programming
What is the output of given program if user enter "xyz" ?#includevoid main(){float age, AgeInSeconds;int value;printf("Enter your age:");value=scanf("%f", &age);if(value==0){printf("\\nYour age is not valid");}AgeInSeconds = 365 * 24 * 60 * 60 * age;printf("\\n You have lived for %f seconds", AgeInSeconds);}

Enter your age: xyz Your age is not valid
Complier error
Enter your age: xyz You have lived for 0 seconds
Enter your age : xyz Your age is not valid

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