Reference links: https://www.runoob.com/cprogramming/c-strings.html
string is actually a null character to \0terminate an array of characters
when the C compiler will initialize the array of characters, automatically \0end on a string
Function to manipulate strings
| name | description |
|---|---|
| strcpy(s1,s2) | Copy s1 to s2 |
| strcat(s1,s2) | S1 to s2 is connected to the end of the |
| strlen(s1) | |
| strmp(s1,s2) | Compare whether the same |
| strchr(s1,char) | Return position s1 in the first occurrence of char |
| strstr(s1,s2) | return |
