basename

gistfile1.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void basename(const char* inFilename, char* outFilename, int outBuflen)
{
    char* p;

    strncpy(outFilename, inFilename, outBuflen);
    // 拡張子の削除.
    if( (p = strrchr(outFilename, '.')) != NULL ) {
        *p = '\0';
    }

    if( (p = strrchr(outFilename, '/')) != NULL ) {
        memmove(filename, p+1, p-filename);
    }
}

int main(int argc, char** argv)
{
    char *input_filename = argv[1];
    char *p = 0;

    char filename[2048];

    basename(input_filename, filename, 2048);

    printf("%s -> %s\n", input_filename, filename);
}