1 files changed, 72 insertions, 0 deletions
diff --git a/27_matrix_input/rotateMatrix.c~ b/27_matrix_input/rotateMatrix.c~
new file mode 100644
index 0000000..3aa97bc
--- /dev/null
+++ b/27_matrix_input/rotateMatrix.c~
@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LINE_SIZE 12
+
+void rotate(char matrix[10][10]) {
+  int layer = 0;
+  char temp1;
+  char temp2;
+  char temp3;
+
+  while (layer <= 10/2) {
+    for (int i = layer; i < 10 - 1 - layer; i++) {
+      temp1 = matrix[i][10-1-layer];
+      temp2 = matrix[10-1-layer][10-1-i];
+      temp3 = matrix[10-1-i][layer];
+
+      matrix[i][10-1-layer] = matrix[layer][i];
+      matrix[10-1-layer][10-1-i] = temp1;
+      matrix[10-1-i][layer] = temp2;
+      matrix[layer][i] = temp3;
+    }
+    layer++;
+  }
+  
+}
+
+int main(int argc, char ** argv) {  
+  if (argc != 2) {    
+    fprintf(stderr,"Usage: rotateMatrix inputFileName\n");    
+    return EXIT_FAILURE;  
+  }  
+
+  FILE * f = fopen(argv[1], "r");  
+  if (f == NULL) {    
+    perror("Could not open file");    
+    return EXIT_FAILURE;  
+  }  
+  char line[LINE_SIZE];
+  char matrix[10][10];
+  int lineNumber = 0;
+  while (fgets(line, LINE_SIZE, f) != NULL && lineNumber < 10) {
+    if (strchr(line, '\n') == NULL) {
+        printf("Line is too long!\n");
+        return EXIT_FAILURE;
+      }
+    for (int j = 0; j<10; j++) {
+      if (line[j] == '\n') {
+        printf("Line is too short!\n");
+        return EXIT_FAILURE;
+      }
+      matrix[lineNumber][j] = line[j];
+        //printf("%c", matrix[i][j]);
+      }
+    lineNumber++;
+  }
+  if (lineNumber < 9) {
+    printf("Not enough number of lines\n");
+    return EXIT_FAILURE;
+  }
+
+  rotate(matrix);
+  for (int i=0; i<10; i++) {
+    for (int j=0; j<10; j++) {
+      printf("%c", matrix[i][j]);
+    }
+    printf("\n");
+  }
+
+  return EXIT_SUCCESS;
+}