C语言小项目.zip

#define _CRT_SECURE_NO_WARNINGS 1 #include"commentconvert.h" void DoNulState(FILE*pfIn, FILE*pfOut, enum STATE* s) { int first = 0; first = fgetc(pfIn); switch (first) { case'/': { int second; second = fgetc(pfIn); switch (second) { case'*': fputc('/', pfOut); fputc('/', pfOut); *s = C_STATE; break; case'/': fputc(first, pfOut); fputc(second, pfOut); *s = CPP_STATE; break; default: fputc(first, pfOut); fputc(second, pfOut); break; } break; } case EOF: *s = END_STATE; break; default: fputc(first, pfOut); break; } } void DoCState(FILE *pfIn, FILE *pfOut, enum STATE *s) { int first = 0; first = fgetc(pfIn); switch (first) { case'\n': fputc(first, pfOut); fputc('/', pfOut); fputc('/', pfOut); break; case'*': { int second = fgetc(pfIn); switch (second) { case'/': { *s = NUL_STATE; int third = fgetc(pfIn); switch (third) { case'\n': fputc(third, pfOut); break; case'/': ungetc(third, pfIn); fputc('\n', pfOut); break; default: fputc('\n', pfOut); fputc(third, pfOut); } } break; case'*': fputc(second, pfOut); ungetc(second,pfIn); break; default: fputc(first, pfOut); fputc(second, pfOut); break; } break; } case EOF: *s = END_STATE; break; default: fputc(first, pfOut); break; } } void DoCppState(FILE *pfIn, FILE *pfOut, enum STATE *s) { int first = 0; first = fgetc(pfIn); switch (first) { case'\n': fputc(first, pfOut); *s = NUL_STATE; break; case EOF: *s = END_STATE; break; default: fputc(first, pfOut); break; } } void DoComment(FILE*pfIn, FILE*pfOut, enum STATE* s) { enum STATE state = NUL_STATE; while (state != END_STATE) { switch (state) { case NUL_STATE: DoNulState(pfIn, pfOut, &state); break; case C_STATE: DoCState(pfIn, pfOut, &state); break; case CPP_STATE: DoCppState(pfIn, pfOut, &state); break; default: break; } } }