#include

#include

#include "main.h"

#define MAX_NUM_LENGTH 11

void usage(int argc, char** argv)

{

if(argc < 4) {

fprintf(stderr,

"usage: %s

",

argv[0]);

exit(EXIT_FAILURE);

}

}

/* This function takes in the two input file names (stored in argv) and

determines the number of integers in each file.

If the two files both have N integers, return N, otherwise return -1.

If one or both of the files do not exist, it should exit with EXIT_FAILURE.

input parameters:

char** argv

return parameters:

-1 if the two input files have different number of integers

N if the two input files both have N integers

*/

int get_num_ints(char** argv)

{

}

/* This function allocates engough memory to the three arrays to store

num_ints elements each.

This function should exit with EXIT_FAILURE if the program fails to allocate

the memory.

input parameters:

unsigned int* input_one

unsigned int* input_two

unsigned long int* output

int num_ints

return parameters:

none

*/

void allocate_mem(unsigned int** input_one, unsigned int** input_two,

unsigned long int** output, int num_ints)

{

}

/* This function reads in num_ints integers from the two input files and

stores them in input_one (first input file) and input_two (second input

file).

If one or both of the files do not exist, it should exit with EXIT_FAILURE.

input parameters:

char** argv

unsigned int* input_one

unsigned int* input_two

int num_ints

return parameters:

none

*/

void get_ints(char** argv, unsigned int* input_one, unsigned int* input_two,

unsigned long int* output, int num_ints)

{

}

/* This function does an element-wise addition between the two input arrays

(input_one and input_two) of size num_ints and stores the result in the

output array (output).

input parameters:

unsigned int* intput_one

unsigned int* intput_two

unsigned long int* output

int num_ints

return parameters:

none

*/

void sum_ints(unsigned int* input_one, unsigned int* input_two,

unsigned long int* output, int num_ints)

{

}

/* This function saves the summed output to an output file, whose name was

specified with the program execution (i.e., argv[3]).

The file should containe one integer value per line, similarly to how the

input files were stored.

input parameters:

char** argv

unsigned int* intput_one

unsigned int* intput_two

unsigned long int* output

int num_ints

return parameters:

none

*/

void save_output(char** argv, unsigned int* input_one, unsigned int* input_two,

unsigned long int* output, int num_ints)

{

}

/* This program takes in three text file names as input.

The first two files contain N integers (where N >=0 and N <= 1,000,000)

whose values range from 0 to 4294967295 (i.e., 32-bit unsigned integers).

The last file is the output file that this program should generate.

For all three files, there should be one integer per line.

For each line in the two input files, read in the two integers, add them, and

then store the sum in the output file.

Repeat this process until all integers have been read from the input files.

For example, if the two input files have eight integerse each

input file 1 input file 2 output file

--------------------------------------------------------

1 2 3

5 2 7

8 5 13

1 12 13

2 2 4

10 2 12

1991 2 1993

11231245 21235 11252480

*/

int main(int argc, char** argv)

{

usage(argc, argv);

// Check the number of integers in the input files

int num_ints = get_num_ints(argv);

if(num_ints == -1) {

fprintf(stderr, "ERR: The two input files have different # of ints ");

exit(EXIT_FAILURE);

} else {

fprintf(stdout, "The two input files have %d integers ", num_ints);

}

unsigned int* input_one = NULL;

unsigned int* input_two = NULL;

unsigned long int* output = NULL;

// Allocate memory to store the integers

allocate_mem(&input_one, &input_two, &output, num_ints);

// Read the integers from the two input files

get_ints(argv, input_one, input_two, output, num_ints);

// Sum up the numbers

sum_ints(input_one, input_two, output, num_ints);

for(int i = 0; i < num_ints; i++) printf("%ld ", output[i]);

// Store the result in the output file

save_output(argv, input_one, input_two, output, num_ints);

free(input_one);

free(input_two);

free(output);

return 0;

}

Fill out the five empty functions above, please do not change any given code, do not add more functions.