h0521.c

来自「141个C语言经典小程序」· C语言 代码 · 共 19 行

#include <stdio.h>
#include <dir.h>

int main(void)
{
    FILE *fp;
    char *fname = "TXXXXXX", *newname, first;

    newname = mktemp(fname);
    fp = fopen(newname,"w+");
    fprintf(fp,"abcdefghijklmnopqrstuvwxyz");
    rewind(fp);
    fscanf(fp,"%c",&first);
    printf("The first character is: %c\n",first);
    fclose(fp);
    remove(newname);

    return 0;
}