SO ##

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>

int **mat;
int *sums;
int size = 0;

pthread_t *threads;

void readMatrix(char *fileLocation)
{
  FILE *f;
  f = fopen(fileLocation, "r");

  fscanf(f, "%d", &size);


  mat = malloc(size*sizeof(int *));
  sums = malloc(size*sizeof(int));
  threads = malloc(size*sizeof(pthread_t));



  int i = 0, j = 0;

  for(i=0;i<size;++i)
    mat[i]=malloc(sizeof(int));

  for(i = 0; i < size; i++)
  {
    for(j = 0; j < size; j++)
    {
      if(!fscanf(f, "%d", &mat[i][j]))
    break;
      //printf("%d", mat[i][j]);
    }
  }

  fclose(f);
}

void *calculateLine(void *param)
{
  int *prm = (int *)param;
  int i = prm[0];
  int j;

  for(j = 0; j < size; j++)
  {
    sums[i] += mat[i][j];
  }

  printf("Line %d, sum = %d\n", i, sums[i]);
}

void startCalculation()
{
  int i,j,k=0;


  for(i = 0; i < size; i++)
  {
    int *param = (int *) malloc(sizeof(int));
    param[0] = i;
    pthread_create(&threads[k++], NULL, calculateLine, param);
  }
}

void printMatrix()
{
  int i,j;
  for(i = 0; i < size; i++)
  {
    for(j = 0; j < size; j++)
    {
      printf("%d ", mat[i][j]);
    }
    printf("\n");
  }
}

int calculateTotal()
{
  int i;

  void *returnVal;
  for(i = 0; i < size; i++)
  {
    pthread_join(threads[i], NULL);
  }

  int total = 0;

  for(i = 0; i < size; i++)
  {
    //printf("sums[%d] =  %d\n", i, sums[i]);
    total += sums[i];
  }

  //printf("ret: %d\n", (int)returnVal);
  //free();
  //printf("Total = %d\n", total);
  return total;
}

void main(int argc, char* argv[])
{
  if(argc != 2)
  {
    printf("USAGE: %s <fisier>\n", argv[0]);
    exit(-1);
  }

  readMatrix(argv[1]);
  printMatrix();
  startCalculation();
  printf("TOTAL: %d\n", calculateTotal());
}