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#pragma clang system_header typedef struct __sFILE { unsigned char *_p; } FILE; FILE *fopen(const char * restrict, const char * restrict) __asm("_" "fopen" ); int fputc(int, FILE *); int fputs(const char * restrict, FILE * restrict) __asm("_" "fputs" ); int fclose(FILE *); void exit(int);