Help in C! Finding a Sum in an Array!

Question

Looking for help in a C code!

What I am trying to understand, is how do I add a function to summarize the rainfall for each year, using the following code as the foundation. What would I need to add, and where in order to accomplish this? Also if you could please explain briefly as well it would be highly appreciated!

Thank you so much!!!

The code:

// C code
#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];
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;
// Input Data
for (int year=0;year < NUMYEARS; year++) {
for (int month=0; month< NUMMONTHS; month++) {
printf("Enter rain for %d, %d:\n", year+1, month+1);
scanf("%f",&Rain);
Raindata[year][month]=Rain;

}
}
}
// Function to printdata
void printdata(){
// Print data
printf ("year\t month\t rain\n");
for (int year=0;year < NUMYEARS; year++) {
for (int month=0; month< NUMMONTHS; month++) {
printf("%s\t %s\t %5.2f\n",
years[year],months[month],Raindata[year][month]);
}
}
}

Answer 1

float yearSum[NUMYEARS] = {0, 0, 0, 0, 0};

void sumdata() {
for (int year=0;year<NUMYEARS;year++) {
yearSum[year] = 0;
for (int month=0;month<NUMMONTHS;month++)
yearSum[year] += Raindata[year][month];
}
}