Clean code

C/p001.c

@@ -22,7 +22,7 @@ int main(int argc, char **argv)
 
    elapsed = (end.tv_sec - start.tv_sec) + (double)(end.tv_nsec - start.tv_nsec) / 1000000000;
 
-   printf("Project Euler, Problem 1\n");   
+   printf("Project Euler, Problem 1\n");
    printf("Answer: %d\n", sum);
 
    printf("Elapsed time: %.9lf seconds\n", elapsed);

C/p002.c

@@ -28,7 +28,7 @@ int main(int argc, char **argv)
 
    elapsed = (end.tv_sec - start.tv_sec) + (double)(end.tv_nsec - start.tv_nsec) / 1000000000;
 
-   printf("Project Euler, Problem 2\n");   
+   printf("Project Euler, Problem 2\n");
    printf("Answer: %d\n", sum);
 
    printf("Elapsed time: %.9lf seconds\n", elapsed);

C/p004.c

@@ -28,7 +28,7 @@ int main(int argc, char **argv)
 
    elapsed = (end.tv_sec - start.tv_sec) + (double)(end.tv_nsec - start.tv_nsec) / 1000000000;
 
-   printf("Project Euler, Problem 4\n");   
+   printf("Project Euler, Problem 4\n");
    printf("Answer: %d\n", max);
 
    printf("Elapsed time: %.9lf seconds\n", elapsed);

C/p006.c

@@ -22,7 +22,7 @@ int main(int argc, char **argv)
 
    elapsed = (end.tv_sec - start.tv_sec) + (double)(end.tv_nsec - start.tv_nsec) / 1000000000;
 
-   printf("Project Euler, Problem 6\n");   
+   printf("Project Euler, Problem 6\n");
    printf("Answer: %d\n", square_sum-sum_squares);
 
    printf("Elapsed time: %.9lf seconds\n", elapsed);

C/p008.c

@@ -72,7 +72,7 @@ int main(int argc, char **argv)
 
    elapsed = (end.tv_sec - start.tv_sec) + (double)(end.tv_nsec - start.tv_nsec) / 1000000000;
 
-   printf("Project Euler, Problem 8\n");   
+   printf("Project Euler, Problem 8\n");
    printf("Answer: %ld\n", max);
 
    printf("Elapsed time: %.9lf seconds\n", elapsed);

C/p010.c

@@ -14,8 +14,11 @@ int main(int argc, char **argv)
    struct timespec start, end;
 
    clock_gettime(CLOCK_MONOTONIC, &start);
-   
-   primes = sieve(N);
+
+   if(primes = sieve(N) == NULL)
+   {
+      fprintf(stderr, "Error! Sieve function returned NULL\n");
+      return 1;
 
    for(i = 0; i < N; i++)
    {
@@ -33,7 +36,7 @@ int main(int argc, char **argv)
 
    printf("Project Euler, Problem 10\n");
    printf("Answer: %ld\n", sum);
-   
+
    printf("Elapsed time: %.9lf seconds\n", elapsed);
 
    return 0;

C/p011.c

@@ -4,7 +4,7 @@
 
 int main(int argc, char **argv)
 {
-   int grid[][20] = {{8, 2, 22, 97, 38, 15, 0, 40, 0, 75, 4, 5, 7, 78, 52, 12, 50, 77, 91, 8},      
+   int grid[][20] = {{8, 2, 22, 97, 38, 15, 0, 40, 0, 75, 4, 5, 7, 78, 52, 12, 50, 77, 91, 8},
                     {49, 49, 99, 40, 17, 81, 18, 57, 60, 87, 17, 40, 98, 43, 69, 48, 4, 56, 62, 0},
                     {81, 49, 31, 73, 55, 79, 14, 29, 93, 71, 40, 67, 53, 88, 30, 03, 49, 13, 36, 65},
                     {52, 70, 95, 23, 4, 60, 11, 42, 69, 24, 68, 56, 1, 32, 56, 71, 37, 2, 36, 91},
@@ -59,7 +59,7 @@ int main(int argc, char **argv)
                max = prod;
             }
          }
-         
+
          prod = 1;
          for(k = i; k < i + 4 && k < 20; k++)
          {

C/p012.c

@@ -27,7 +27,7 @@ int main(int argc, char **argv)
 
    elapsed = (end.tv_sec - start.tv_sec) + (double)(end.tv_nsec - start.tv_nsec) / 1000000000;
 
-   printf("Project Euler, Problem 12\n");   
+   printf("Project Euler, Problem 12\n");
    printf("Answer: %d\n", triang);
 
    printf("Elapsed time: %.9lf seconds\n", elapsed);

C/p015.c

@@ -10,7 +10,7 @@ int main(int argc, char **argv)
    mpz_t count, tmp;
 
    clock_gettime(CLOCK_MONOTONIC, &start);
-   
+
    mpz_inits(count, tmp, NULL);
    mpz_fac_ui(count, 40);
    mpz_fac_ui(tmp, 20);
@@ -25,7 +25,7 @@ int main(int argc, char **argv)
    gmp_printf("Answer: %Zd\n", count);
 
    printf("Elapsed time: %.9lf seconds\n", elapsed);
-   
+
    mpz_clears(count, tmp, NULL);
 
    return 0;

C/p016.c

@@ -31,7 +31,7 @@ int main(int argc, char **argv)
    gmp_printf("Answer: %Zd\n", sum);
 
    printf("Elapsed time: %.9lf seconds\n", elapsed);
-   
+
    mpz_clears(p, sum, r, NULL);
 
    return 0;

C/p017.c

@@ -18,7 +18,7 @@ int main(int argc, char **argv)
    {
       sum += n1_19[i];
    }
-   
+
    for(i = 0; i < 8; i++)
    {
       n20_90[i] *= 10;
@@ -28,7 +28,7 @@ int main(int argc, char **argv)
       }
       sum += n20_90[i];
    }
-   
+
    for(i = 0; i < 9; i++)
    {
       n100_900[i] *= 100;
@@ -42,7 +42,7 @@ int main(int argc, char **argv)
       }
       sum += n100_900[i] - 3;
    }
-   
+
    sum += n1000;
 
    clock_gettime(CLOCK_MONOTONIC, &end);

C/p018.c

@@ -44,9 +44,9 @@ int main(int argc, char **argv)
          fscanf(fp, "%d", &triang[i-1][j]);
       }
    }
-   
+
    fclose(fp);
-   
+
    sum_triangle(triang, 15, 0, 0, 0);
 
    clock_gettime(CLOCK_MONOTONIC, &end);

C/p019.c

@@ -49,7 +49,7 @@ int main(int argc, char **argv)
          day = (day + 1) % 7;
       }
       month = (month + 1) % 12;
-      
+
       if(month == jan)
       {
          year++;