"hi" "hello" "byehow can we concatenate the three strings(astrcat( , , (bstrcat( (strcat( , ))(cstrcpy( strcat( , ) strlen("oxford university press"is ( ( ( ( which function adds string to the end of another string(astradd((bstrcat((cstrtok((dstrcpy(true or false string hello world can be read using scanf( string when read using scanf(needs an ampersand character the gets(function takes the starting address of string which will hold the input tolower(is defined in ctype header file if and are two stringsthen the concatenation operation produces string which contains the characters of followed by the characters of appending one string to another string involves copying the contents of the source string at the end of the destination string < when in dictionary orders precedes if "good morning"then substr_right ( morning replace ("aaabbbccc"" ""yyy")aaabbbcc initializing string as char str["hello"is incorrect as null character has not been explicitly added the scanf(function automatically appends null character at the end of the string read from the keyboard string variables can be present either on the left or on the right side of the assignment operator when string is initialized during its declarationthe string must be explicitly terminated with null character strcmp("and""ant")will return positive value assignment operator can be used to copy the contents of one string into another fill in the blanks strings are every string is terminated with if string is given as "ab cd"the length of this string is the subscript of string starts with characters of string are stored in memory locations char mesg[ ]can store maximum of characters function terminates as soon as it finds blank space the ascii code for - varies from toupper(is used to > means the function to reverse string is if "good morning"then substr_left ( index("welcome to the world of programming""world" returns the position in the string where the string pattern first occurs strcmp(str str returns if function computes the length of string besides printf()function can be used to print line of text on the screen