STRCMP implementation in C

//Program to implement strcmp

#include
int my_strcmp( const char *sDest, const char *sSrc){
    while( *sDest == *sSrc){
        if( *sDest == '\0')
            return 0;
        sDest++;
        sSrc++;
    }
    return (*sDest - *sSrc);
}
// OR
int mystrcmp(const char *str1, const char *str2){
    while((*str1 == *str2) && *str1 && *str2) str1++, str2++;
    return (*str1 - *str2);
}
//OR using array
int mystrcmp(const char *a, const char *b)
    int i;
    for(i=0; (a[i] == b[i]) && (a[i] != '\0') && (b[i] != '\0'));i++);
    return (a[i] - b[i])
}

int main(){
    printf("\nstrcmp() = [%d]\n", mystrcmp("Umesh","Umesh"));
    printf("\nstrcmp() = [%d]\n", mystrcmp("Umesh","Guddu"));
      return(0);
}

ONE LINE IMPLEMENTATION USING RECURSION

#include <stdio.h>

//My_strcmp return 0 if both the string are same , 1 if they are diff

int my_strcmp(char *a, char *b){
    return (*a==*b && *b=='\0')?0:(*a == *b)?my_strcmp(++a, ++b):1;
} 

int main(){
    char *a = "Umesh";
    char *b = "Umesh";
    if(my_strcmp(a, b) == 0){
        printf("Same");
    else
        printf("Not same");
    return 0;
}