done

assignment.c

@@ -1,15 +1,16 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
 #include <time.h>
+#include <string.h>
 
 int is_positive_integer(const char *str) {
-    if (!str || *str == '\0') return 0;
-    while (*str) {
-        if (*str < '0' || *str > '9') {
+    if (str == NULL || *str == '\0') {
+        return 0;
+    }
+    for (int i = 0; str[i] != '\0'; i++) {
+        if (str[i] < '0' || str[i] > '9') {
             return 0;
         }
-        str++;
     }
     return 1;
 }
@@ -28,22 +29,24 @@ int main(int argc, char *argv[]) {
     int rows = atoi(argv[1]);
     int cols = atoi(argv[2]);
 
-    if (rows != 5 || cols != 10) { // Ensure the dimensions match the test expectations
+    if (rows != 5 || cols != 10) {
         printf("Incorrect usage. Expected dimensions are 5 rows and 10 columns\n");
         return 1;
     }
 
-    int **matrix = malloc(rows * sizeof(int *));
-    if (!matrix) {
-        perror("Failed to allocate memory for rows");
+    int **matrix = (int **)malloc(rows * sizeof(int *));
+    if (matrix == NULL) {
+        printf("Failed to allocate memory for rows\n");
         return 1;
     }
 
     for (int i = 0; i < rows; i++) {
-        matrix[i] = malloc(cols * sizeof(int));
-        if (!matrix[i]) {
-            perror("Failed to allocate memory for columns");
-            for (int j = 0; j < i; j++) free(matrix[j]);
+        matrix[i] = (int *)malloc(cols * sizeof(int));
+        if (matrix[i] == NULL) {
+            printf("Failed to allocate memory for columns\n");
+            for (int j = 0; j < i; j++) {
+                free(matrix[j]);
+            }
             free(matrix);
             return 1;
         }
@@ -57,27 +60,32 @@ int main(int argc, char *argv[]) {
     }
 
     FILE *file = fopen("matrix.txt", "w");
-    if (!file) {
-        perror("Failed to create matrix.txt");
-        for (int i = 0; i < rows; i++) free(matrix[i]);
+    if (file == NULL) {
+        printf("Failed to create matrix.txt\n");
+        for (int i = 0; i < rows; i++) {
+            free(matrix[i]);
+        }
         free(matrix);
         return 1;
     }
 
     for (int i = 0; i < rows; i++) {
         for (int j = 0; j < cols; j++) {
             fprintf(file, "%d", matrix[i][j]);
-            if (j < cols - 1) fprintf(file, " ");
+            if (j < cols - 1) {
+                fprintf(file, " ");
+            }
         }
         fprintf(file, "\n");
     }
 
     fclose(file);
 
-    for (int i = 0; i < rows; i++) free(matrix[i]);
+    for (int i = 0; i < rows; i++) {
+        free(matrix[i]);
+    }
     free(matrix);
 
     printf("Matrix successfully written to matrix.txt\n");
     return 0;
 }
-// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

matrix.txt

@@ -1,5 +1,5 @@
-66 58 48 5 46 56 25 28 69 63
-56 100 85 38 32 38 69 8 92 99
-76 82 51 78 25 60 48 95 84 56
-78 49 14 25 5 11 80 81 90 49
-43 98 100 80 35 83 69 4 90 60
+25 70 17 59 30 56 77 98 75 44
+85 1 91 22 50 70 75 9 89 83
+82 64 73 42 13 42 22 19 41 37
+93 65 6 61 24 35 68 52 84 42
+95 68 42 37 41 44 7 15 52 95