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Questions and Answers
What is the correct way to declare a character array for card suits?
What is the correct way to declare a character array for card suits?
What will happen if the length of an array is specified differently from the number of initializers?
What will happen if the length of an array is specified differently from the number of initializers?
Which of the following correctly initializes an array of structs?
Which of the following correctly initializes an array of structs?
What types of data can be included in a struct initializer?
What types of data can be included in a struct initializer?
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Which of the following statements is true regarding the initialization of simple data types?
Which of the following statements is true regarding the initialization of simple data types?
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What is the purpose of the function pointer in a struct initialization?
What is the purpose of the function pointer in a struct initialization?
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How many elements are present in the initialized array for the card example provided?
How many elements are present in the initialized array for the card example provided?
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What will be the last element's value if it is not explicitly initialized in struct initialization?
What will be the last element's value if it is not explicitly initialized in struct initialization?
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In the provided struct Card, which data types are used for its members?
In the provided struct Card, which data types are used for its members?
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What is the correct syntax for defining a struct type in C?
What is the correct syntax for defining a struct type in C?
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What will be the initial value of the 'isDealt' member in the last two elements of the 'hand' array?
What will be the initial value of the 'isDealt' member in the last two elements of the 'hand' array?
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What happens to the unspecified elements of an array if a size is declared but fewer initializers are given?
What happens to the unspecified elements of an array if a size is declared but fewer initializers are given?
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How many parameters are in the struct initializer for the 'Card' type when it's declared as an array?
How many parameters are in the struct initializer for the 'Card' type when it's declared as an array?
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In an array of structs, what is the correct way to reference a member of the struct for its first element?
In an array of structs, what is the correct way to reference a member of the struct for its first element?
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What is the purpose of function pointers in the struct initialization for type 'Card'?
What is the purpose of function pointers in the struct initialization for type 'Card'?
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If you attempt to initialize 'SUITS' with a string instead of characters, what will happen?
If you attempt to initialize 'SUITS' with a string instead of characters, what will happen?
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In the definition of an array of structs, what must match the order of the elements during initialization?
In the definition of an array of structs, what must match the order of the elements during initialization?
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If 'nStudents' is declared as 'long nStudents = 50;', what is its data type?
If 'nStudents' is declared as 'long nStudents = 50;', what is its data type?
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Which character represents the suit of a card in the given struct definition?
Which character represents the suit of a card in the given struct definition?
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What data type is used for the variable 'strPrompt' in the initialization example?
What data type is used for the variable 'strPrompt' in the initialization example?
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Study Notes
C Programming: Initializing Arrays of Structs
-
Initializing simple data types is straightforward. Examples include
long nStudents = 50;,char *strPrompt = "Welcome!";, andint nCourse = 3;. -
Arrays can be initialized with multiple values. For example,
char *cards[] = {"AC", "2C", "3C", ..., "KS"};has 52 elements. -
The size of an array can often be inferred from the number of initialization elements:
char SUITS[] = {'C', 'D', 'H', 'S'};creates an array of 4 elements. -
Arrays can be initialized with explicit sizes even if inferring the size is possible. For example
char SUITS[4] = {'C','D','H','S'}. -
If you specify an array's length larger than the initial values, the remaining elements will be filled with the last initialized value. For example,
char inHand[53] = {0};results ininHandfilled with zeros. -
Structs can also be initialized. The initialization values must be in the same order as the members of the struct. For example:
typedef struct { char *rank; char suit; int isDealt; void (*pfuncEffect)( Card *pTopCard ); } Card;can be initializedCard myCard = { “2″, 'C', 0, &drawTwoCards }; -
Arrays of structs are initialized by nesting the individual struct initializations. For example
Card hand[] = { {“2″, 'C', 0, &drawTwoCards },
{ "2", 'D', 0, &drawTwoCards },
{ “2″, `H′, 0, &drawTwoCards },
{ "2", 'S', 0, &drawTwoCards },
{ "Q", 'S', 0, &drawFiveCards },
{ “8″, `C′, 0, &changeSuit },
{ "3", 'S', 0, NULL },
{ "4", 'S', 0, NULL }
};
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Description
This quiz covers the initialization of arrays and structs in C programming. You'll learn about initializing simple data types, using explicit sizes, and understanding how remaining elements are filled when the array size exceeds the number of initialized values. Test your knowledge and improve your skills in C programming fundamentals.
