#include <stdio.h>
void reverse(const char * const sPtr);
int main()
{
    char sentence [ 80 ];
    printf("Enter a line of text:\n");

    fgets( sentence, 80, stdin);
    printf("\nThe line print backword is :\n");
    reverse( sentence);
    printf("\n");
    return 0;
}

void reverse( const char * const sPtr)
{
    if( sPtr[ 0 ] == '\0'){
        return;
    }
    else{
        reverse( &sPtr[ 1 ]);
        putchar( sPtr[ 0 ]);
    }
}

帮忙给解释一下reverse( &sPtr[ 1 ]);
          putchar( sPtr[ 0 ]);