String3

Which function is used to find the last occurrence of a substring in a string?

• strstr()

• strrstr()

• strrchr()

• strcmp

Which function returns a pointer to the first occurrence of the character in a string?

• strchr()

• strrchr()

• strstr()

• strfind()

What does the toupper() function do?

• Converts a lowercase character to uppercase

• Converts a string to uppercase

• Converts an uppercase character to lowercase

• Converts numbers to characters

What will the strcmp("hello", "hello") function return?

• 1

• 2

• 0

• -0

Which function can be used to check if a string contains a particular substring in C?

• strcontains()

• strindex()

• strstr()

• strfind()

tolower() function is declared in which header file?

• ctype.h

• stdlib.h

• stdio.h

• string.h

printf("%c", tolower('7'));

• 7

• a

• ASCII value of 7

• Undefined behavior