8 typedef struct sFILE FILE;
10 extern int printf(const char *format, ...);
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11 extern void sprintfv(char *buf, char *format, va_list args);
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12 extern int ssprintfv(char *format, va_list args);
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13 extern int sprintf(char *buf, char *format, ...);
15 extern FILE *fopen(char *file, char *mode);
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16 extern FILE *freopen(FILE *fp, char *file, char *mode);
17 extern void fclose(FILE *fp);
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18 extern void fflush(FILE *fp);
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20 extern int fprintf(FILE *fp, const char *format, ...);