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Language in C Interview Questions and Answers

Ques. Why doesn't the following statement work?

char str[ ] = "Hello" ;
strcat ( str, '!' ) ;
Ans. The string function strcat( ) concatenates strings and not a character. The basic difference between a string and a character is that a string is a collection of characters, represented by an array of characters whereas a character is a single character. To make the above statement work writes the statement as shown below:
strcat ( str, "!" ) ;

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