C Common String functions

Get string Length:

size_t strlen (const char *str);  

string copy function:

Copy the contents of src into dest , it will overwrite the original content, it will put src in the , no overwrite content unchanged

if the length in the SCR exceeds the length of the dest, it can cause the program to crash

strcpy (char * dest, const char * src);

Len: indicates the length of the string to be copied and does not contain the

strncpy (char * dest, const char *SRC, size_t len)

string concatenation function:

splicing the contents of SRC in the dest original string , from the back to find , find the first location to start stitching

If the length in the SCR exceeds the length of the dest, it can cause the program to crash  

strcat (char * dest, const char * src)

string comparison function:

STR1 and str2 from the first character to compare, if equal to find the next character is equal, if all the same return 0, if you encounter a non-equal character will return the difference of the ASCII value of two characters

strcmp (const char *STR1, const char * str2);

C Common String functions