Compare Two String using strcmp Function Case 1: when the strings are equal, it returns zero. Case 2: when the strings are unequal, it returns the difference between ASCII values of the characters that differ.
C Program to Check Whether Character is Lowercase or Not without using Library Function; C Program to Copy One String into Other Without Using Library Function. You can concatenate two strings easily using standard library function strcat() but, this program concatenates two strings manually without using strcat() function. In the following program user would be asked to enter two strings and then the program. Library function. To concatenate two strings without * using.