Selected function prototypes and constant from the standard libraries. You shouldn't need any functions beyond those given here. If you feel you do need one, ask the proctor who will write the prototype on the board.

• <math.h>
  • double sin(double x);
  • double cos(double x);
  • double tan(double x);
  • double exp(double x); /* computes e^x */
  • double log(double x); /* computes the natural logarithm of x */
  • double log10(double x); /* computes the common (base ten) logarithm of x */
  • double fabs(double x); /* absolute value of x */
  • double pow(double x, double y); /* computes x^y */
• <stdio.h>
  • int fclose(FILE *stream);
  • int feof(FILE *stream);
  • FILE *fopen(const char *filename, const char *mode);
  • int fprintf(FILE *stream, const char *format, ...);
  • int fscanf(FILE *stream, const char *format, ...);
  • int getchar(void);
  • int printf(const char *format, ...);
  • int scanf(const char *format, ...);
• <stdlib.h>
  • RAND_MAX
  • int rand(void);
  • void srand(unsigned int seed);