What is the advantage of the union over structure? List any four-string library functions with the prototype.

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Suresh Chand · Accepted Answer

The advantage of the union over the structure are It occupies less memory compared to the structure. When you use union, only the last variable can be directly accessed. Union is used when you have to use the same memory location for two or more data members. It enables you to hold data of only one data member. Its allocated space is equal to the maximum size of the data member. Any four string library functions are: 1. strlen(): The strlen() function returns the length of the given string. It doesn't count null character '0'. Syntax: strlen(string_name) 2. strcpy(): The strcpy(destination, source) function copies the source string in destination. Syntax: strcpy(destination, source) 3. strcmp(): The strcmp(first_string, second_string) function compares two string and returns 0 if both strings are equal. Syntax: strcmp(first_string, second_string) 4. strrev(): The strrev(string) function returns reverse of the given string. Syntax: strrev(string)

What is the advantage of the union over structure? List any four-string library functions with the prototype.

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What is the advantage of the union over structure? List any four-string library functions with the prototype.

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