加上头文件#include   末尾_getch();即可。 如下: #include #include main(){ char a,b; a = 123; b = 130; printf("%c,%c\n",a,b); _getch(); }

#include #include main(){ FILE *fp; char c; if((fp=fopen("d:\\a.txt","rt"))==NULL){ printf("\n cannot open file and exit!"); _getch(); exit(1); } c = fgetc(fp);