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define NUMMONTHS 12
#define NUMYEARS 5
#include <stdio.h>
 
// function prototypes
void inputdata();
void printdata();
 
// Global variables
// These are available to all functions
float Raindata[NUMYEARS][NUMMONTHS];
float Windspeed[NUMYEARS][NUMMONTHS];
char years[NUMYEARS][5] = {"2011","2012","2013","2014","2015"};
 char months[NUMMONTHS][12] ={"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
int main ()
{
  char enterData = 'y';
  printf("Do you want to input Precipatation data? (y for yes)\n");
  scanf("%c",&enterData);
  if (enterData == 'y') {
    // Call Function to Input data
    inputdata();  
 
     // Call Function to display data
     printdata();
   }
   else {
     printf("No data was input at this time\n");
   }
   printf("Please try the Precipitation program again. \n");
   return 0;
}
// function to inputdata
void inputdata() {
  /* variable definition: */
  float Rain=1.0;  
  float WSP=1.0;
   // Input Data
   for (int year=0;year < NUMYEARS; year++) {
      for (int month=0; month< NUMMONTHS; month++) {
          printf("Enter rain and windspeed for %d, %d:\n", year+1, month+1);
          scanf("%f",&Rain);
          Raindata[year][month]=Rain;  
          printf("Enter windspeed for %d, %d:\n", year+1, month+1);
          scanf("%f",&WSP);
          Windspeed[year][month]=WSP;
      }
   }
}
// Function to printdata
void printdata(){
// Print data
   printf ("year\t month\t rain\t wind\n");
   for (int year=0;year < NUMYEARS; year++) {
      for (int month=0; month< NUMMONTHS; month++) {
          printf("%s\t %s\t %5.2f %5.2f\n", years[year],months[month],Raindata[year][month],Windspeed[year][month]);         
      }      
   }
}

prog.c:1:1: error: unknown type name ‘define’
 define NUMMONTHS 12
 ^~~~~~
prog.c:1:18: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before numeric constant
 define NUMMONTHS 12
                  ^~
In file included from /usr/include/stdio.h:74:0,
                 from prog.c:3:
/usr/include/libio.h:302:3: error: unknown type name ‘size_t’
   size_t __pad5;
   ^~~~~~
/usr/include/libio.h:305:67: error: ‘size_t’ undeclared here (not in a function)
   char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)];
                                                                   ^~~~~~
/usr/include/libio.h:333:62: error: expected declaration specifiers or ‘...’ before ‘size_t’
 typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes);
                                                              ^~~~~~
/usr/include/libio.h:342:6: error: expected declaration specifiers or ‘...’ before ‘size_t’
      size_t __n);
      ^~~~~~
/usr/include/libio.h:464:19: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘_IO_sgetn’
 extern _IO_size_t _IO_sgetn (_IO_FILE *, void *, _IO_size_t);
                   ^~~~~~~~~
In file included from prog.c:3:0:
/usr/include/stdio.h:339:20: error: expected declaration specifiers or ‘...’ before ‘size_t’
       int __modes, size_t __n) __THROW;
                    ^~~~~~
/usr/include/stdio.h:388:44: error: expected declaration specifiers or ‘...’ before ‘size_t’
 extern int snprintf (char *__restrict __s, size_t __maxlen,
                                            ^~~~~~
/usr/include/stdio.h:392:45: error: expected declaration specifiers or ‘...’ before ‘size_t’
 extern int vsnprintf (char *__restrict __s, size_t __maxlen,
                                             ^~~~~~
/usr/include/stdio.h:711:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘fread’
 extern size_t fread (void *__restrict __ptr, size_t __size,
               ^~~~~
/usr/include/stdio.h:717:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘fwrite’
 extern size_t fwrite (const void *__restrict __ptr, size_t __size,
               ^~~~~~
prog.c:11:26: error: ‘NUMMONTHS’ undeclared here (not in a function)
 float Raindata[NUMYEARS][NUMMONTHS];
                          ^~~~~~~~~

Standard output is empty