13 | 1-7 | sharafat

solutions/sharafat/13/.gitignore

@@ -0,0 +1,2 @@
+DATA*
+*.txt

solutions/sharafat/13/1.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main()
+{
+    FILE *fp1, *fp2;
+    char ch;
+    fp1 = fopen("file1.txt", "r");
+    fp2 = fopen("file2.txt", "w");
+    while ((ch = fgetc(fp1)) != EOF)
+    {
+        fputc(ch, fp2);
+    }
+    return 0;
+}

solutions/sharafat/13/2.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+
+int main()
+{
+    FILE *fp1, *fp2, *fp3;
+    int num1, num2;
+    fp1 = fopen("DATA1", "r");
+    fp2 = fopen("DATA2", "r");
+    fp3 = fopen("DATA", "w");
+
+    fscanf(fp1, "%d", &num1);
+    fscanf(fp2, "%d", &num2);
+
+    while (!feof(fp1) && !feof(fp2))
+    {
+        if (num1 < num2)
+        {
+            fprintf(fp3, "%d\n", num1);
+            fscanf(fp1, "%d", &num1);
+        }
+        else
+        {
+            fprintf(fp3, "%d\n", num2);
+            fscanf(fp2, "%d", &num2);
+        }
+    }
+    while (!feof(fp1))
+    {
+        fprintf(fp3, "%d\n", num1);
+        fscanf(fp1, "%d", &num1);
+    }
+    while (!feof(fp2))
+    {
+        fprintf(fp3, "%d\n", num2);
+        fscanf(fp2, "%d", &num2);
+    }
+    return 0;
+}

solutions/sharafat/13/3.c

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+#include <stdio.h>
+
+int main()
+{
+    FILE *fp1, *fp2;
+    int num1, num2;
+    fp1 = fopen("DATA1", "r");
+    fp2 = fopen("DATA2", "r");
+
+    fscanf(fp1, "%d", &num1);
+    fscanf(fp2, "%d", &num2);
+
+    while (!feof(fp1) || !feof(fp2))
+    {
+        if (num1 != num2)
+        {
+            printf("Not same");
+            return 1;
+        }
+        fscanf(fp1, "%d", &num1);
+        fscanf(fp2, "%d", &num2);
+    }
+    if (feof(fp1) || feof(fp2))
+    {
+        printf("Not same");
+        return 1;
+    }
+    printf("Same");
+    return 0;
+}

solutions/sharafat/13/4.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int main()
+{
+    FILE *fp1, *fp2;
+    int num;
+    fp1 = fopen("DATA1", "r");
+    fp2 = fopen("DATA2", "a");
+
+    // fseek(fp1, 0, 2);
+    fseek(fp2, 0, 2);
+
+        fscanf( fp1, "%d", &num);
+    while ( !feof(fp1) )
+    {
+        fprintf( fp2, "%d\n", num);
+        fscanf( fp1, "%d", &num);
+    }    
+    return 0;
+}

solutions/sharafat/13/5.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+int main()
+{
+    FILE *fp1, *fp2;
+    int num, sum = 0;
+    fp1 = fopen("DATA", "r");
+    fp2 = fopen("DATA", "a");
+
+    fscanf(fp1, "%d", &num);
+    while (!feof(fp1))
+    {
+        printf("%d + ", num);
+        sum += num;
+        fscanf(fp1, "%d", &num);
+    }
+    printf("= %d\n", sum);
+
+    fseek(fp2, 0, 2);
+    fprintf(fp2, "%d\n", sum);
+
+    return 0;
+}

solutions/sharafat/13/6.c

@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+int main()
+{
+    FILE *fp1, *fp2;
+    char ch, exclude;
+    fp1 = fopen("file1.txt", "r");
+    fp2 = fopen("file2.txt", "w");
+    printf("What to exclude? ");
+    scanf("%c", &exclude);
+    while ((ch = fgetc(fp1)) != EOF)
+    {
+        if (ch == exclude)
+            continue;
+        fputc(ch, fp2);
+    }
+    return 0;
+}

solutions/sharafat/13/7.c

@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <math.h>
+
+int main()
+{
+    FILE *fp;
+    char file_name[100];
+    int offset;
+
+    printf("Enter file name: ");
+    scanf("%s", file_name);
+    printf("Enter offset: ");
+    scanf("%d", &offset);
+
+    fp = fopen(file_name, "r");
+
+    if (fp == NULL)
+    {
+        printf("File not found\n");
+        return 1;
+    }
+
+    char ch;
+    int i = 0;
+    if (offset >= 0)
+    {
+        while ((ch = fgetc(fp)) != EOF)
+        {
+            if (i >= offset)
+            {
+                break;
+            }
+            printf("%c", ch);
+            if (ch == '\n')
+            {
+                i++;
+            }
+        }
+    }
+    else
+    {
+        int total_lines = 0;
+        while ((ch = fgetc(fp)) != EOF)
+        {
+            if (ch == '\n')
+            {
+                total_lines++;
+            }
+        }
+        // printf("Total lines: %d\n", total_lines);
+        rewind(fp);
+        i = 0;
+        while ((ch = fgetc(fp)) != EOF)
+        {
+            if (total_lines + offset <= i)
+            {
+                printf("%c", ch);
+                // break;
+            }
+            if (ch == '\n')
+            {
+                i++;
+            }
+        }
+    }
+    return 0;
+}