View difference between Paste ID: rftCp4Np and C75CS9W9

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #define INPUT_FILE      "be.txt"
 #define OUTPUT_FILE     "ki.txt"
 #define MAX_WORD_SIZE   200
 
-int read_error() {
+
-	fprintf(stderr, "Read error!\n");
+
-	return -2;
+
 int main() {
 	FILE *in = fopen(INPUT_FILE, "r");
 
 	int func, cols;
 	fscanf(in, "%d %d", &func, &cols);
 
 	int key[10];
-	if (!in) {
+	int i;
-		fprintf(stderr, "Can't read \"%s\"!\n", INPUT_FILE);
+
-		return -1;
+		fscanf(in, "%d", &key[i]);
 	}
 
 	char *str = (char *) malloc(sizeof(char) * MAX_WORD_SIZE + 1);
-	if (fscanf(in, "%d %d", &func, &cols) != 2) return read_error();
+	fscanf(in, "%s", str);
 
 	if (func == 1) {
-	size_t i;
+
 	} else {
-		if (fscanf(in, "%d", &key[i]) != 1) return read_error();
+
 	}
 
 	FILE *out = fopen(OUTPUT_FILE, "w");
-	if (fscanf(in, "%s", str) != 1) return read_error();
+
 	fclose(out);
 }
 
 char *encode(const char *str, const int *key, int cols) {
 	int rows = strlen(str) / cols;
 	char **table = (char **) malloc(sizeof(char *) * rows);
 
 	int i, j;
-	if (!out) {
+
-		fprintf(stderr, "Can't write \"%s\"!\n", OUTPUT_FILE);
+
-		return -3;
+
 			table[i][j] = str[i * cols + j];
 		}
 	}
 
 	char *coded = (char *) malloc(sizeof(char) * strlen(str) + 1);
 	for (i = 0; i < cols; i++) {
 		for (j = 0; j < rows; j++) {
 			coded[i * rows + j] = table[j][key[i] - 1];
 		}
 	}
-	size_t i, j;
+
 	return coded;
 }
 
-			// printf("%c ", str[i * cols + j]);
+
 	int rows = strlen(str) / cols;
 	char **table = (char **) malloc(sizeof(char *) * cols);
-		// printf("\n");
+
 	int i, j;
 	for (i = 0; i < cols; i++) {
 		table[key[i]] = (char *) malloc(sizeof(char) * rows + 1);
 		for (j = 0; j < rows; j++) {
-		// printf("Key: %d\n", key[i]);
+
 		}
-			// printf("%d %d %d %c\n", i, j, i * rows + j, table[j][key[i] - 1]);
+
 
 	char *decoded = (char *) malloc(sizeof(char) * strlen(str) + 1);
 	for (j = 0; j < rows; j++) {
 		for (i = 1; i <= cols; i++) {
-	//printf("coded: '%s'\n", coded);
+
 		}
 	}
 	decoded[strlen(str)] = '\0';
 
 	return decoded;
 }
 
-	size_t i, j;
+