Can't compile matrix multiplication - c

Question

Hey I got this error and I tried like 10 solutions and neither works. I want to load 2 matrix, each one from its own txt file then to multiply them. I can't compile cause of LNK1120 and LNK2019 errors.
Here is my code:
int main(int argc, char *argv[])
{
FILE *macierz1, *macierz2, *fw;
char *line = malloc(1000);
int count = 0;
macierz1 = fopen("macierz1.txt", "r");
if (macierz1 == NULL) {``
printf("nie można otworzyć", argv[1]);
exit(1);
}
macierz2 = fopen("macierz2.txt", "r");
if (macierz2 == NULL) {
printf("nie można otworzyć", argv[2]);
exit(1);
}
double *data = (double*)malloc(1000 * sizeof(double));
if (data == NULL)
{
printf("błąd lokowania pamięci");
return EXIT_FAILURE;
}
getline(&line, &count, macierz1);
int read = -1, cur = 0, columCount1 = 0;
while (sscanf(line + cur, "%lf%n", &data[columCount1], &read) == 1)
{
cur += read; columCount1++;
}
int rowCount1 = 1;
while (getline(&line, &count, macierz1) != -1) { rowCount1++; }
printf("%d\n", columCount1);
printf("%d\n", rowCount1);
getline(&line, &count, macierz2);
read = -1, cur = 0;
int columCount2 = 0;
while (sscanf(line + cur, "%lf%n", &data[columCount2], &read) == 1)
{
cur += read; columCount2++;
}
int rowCount2 = 1;
while (getline(&line, &count, macierz2) != -1) { rowCount2++; }
printf("%d\n", columCount2);
printf("%d\n", rowCount2);
int i = 0;
int j = 0;
int **mat1 = (int **)malloc(rowCount1 * sizeof(int*));
for (i = 0; i < rowCount1; i++)
mat1[i] = (int *)malloc(columCount1 * sizeof(int));
fseek(macierz1, 0, SEEK_SET);
for (i = 0; i < rowCount1; i++)
{
for (j = 0; j < columCount1; j++)
fscanf(macierz1, "%d", &mat1[i][j]);
}
i = 0;
j = 0;
printf("\n\n");
//print matrix 1
for (i = 0; i < rowCount1; i++)
{
for (j = 0; j < columCount1; j++)
printf("%d", mat1[i][j]);
printf("\n");
}
i = 0;
j = 0;
int **mat2 = (int **)malloc(rowCount2 * sizeof(int*));
for (i = 0; i < rowCount2; i++)
mat2[i] = (int *)malloc(columCount2 * sizeof(int));
fseek(macierz2, 0, SEEK_SET);
for (i = 0; i < rowCount2; i++)
{
for (j = 0; j < columCount2; j++)
fscanf(macierz2, "%d", &mat2[i][j]);
}
i = 0;
j = 0;
printf("\n\n");
//print matrix 2
for (i = 0; i < rowCount2; i++)
{
for (j = 0; j < columCount2; j++)
printf("%d", mat2[i][j]);
printf("\n");
}
i = 0;
int **mat3 = (int **)malloc(rowCount1 * sizeof(int*));
for (i = 0; i < rowCount1; i++)
mat3[i] = (int *)malloc(columCount2 * sizeof(int));
i = 0;
j = 0;
int k = 0;
int sum = 0;
if (columCount1 != rowCount2)
{
puts("The number of columns in Matrix 1 is not same as the number of rows in Matrix 2");
exit(1);
}
//multiplication of two matrices
for (i = 0; i<rowCount1; i++)
{
for (j = 0; j<columCount2; j++)
{
mat3[i][j] = 0;
for (k = 0; k<columCount1; k++)
{
mat3[i][j] = mat3[i][j] + mat1[i][k] * mat2[k][j];
}
}
}
//print multiplication result
printf("\n\nResult = \n\n");
for (i = 0; i < rowCount1; i++)
{
for (j = 0; j < columCount2; j++)
printf("%d", mat3[i][j]);
printf("\n");
}
for (i = 0; i< rowCount1; i++)
free(mat1[i]);
free(mat1);
for (i = 0; i< rowCount2; i++)
free(mat2[i]);
free(mat2);
for (i = 0; i< rowCount1; i++)
free(mat3[i]);
free(mat3);
free(data);
return 0;
}

Answer 1

Since you're using Visual C++, there is no such C function as getline. The C compiler that comes with Visual C++ adheres to the C89 specification.
Use fgets to retrieve the data from the file.
If you really want to use getline in your Visual C++ (really C) program, you could try this code from GNU that implements the function.

Answer 2

There is a stray '`' in program posted at the end of the line:
if (macierz1 == NULL) {``
and
getline
function is not defined.
add needed includes:
#include <stdio.h>
#include <stdlib.h>