strcmp (const char *s1,const char * s2) compares string S1 and S2 functions

Prototype: extern int strcmp (const char *s1,const char * s2); Header file: string.h function: Compare strings S1 and S2. General form: strcmp (String 1, String 2) Description: When S1<s2, the return value <0 when S1==S2, the return value =0 when S1>S2, the return value >0 that is: two strings from left to right characters by character (compared to the ASCII value size), Until a different character or ' s ' is encountered. such as: "A" < "B" "a" > "a" "Computer" > "Compare" Special note: strcmp (const char *s1,const char * s2) This can only compare strings, cannot compare other forms of parameters such as numbers.