13 | 8-9 | sharafat

solutions/sharafat/13/8.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+
+struct Product
+{
+    int code;
+    float cost;
+    int quantity;
+};
+
+int main()
+{
+    FILE *fp;
+    fp = fopen("products.txt", "w");
+    struct Product products[5];
+    for (int i = 0; i < 5; i++)
+    {
+        printf("\nEnter product code: ");
+        scanf("%d", &products[i].code);
+        printf("Enter product cost: ");
+        scanf("%f", &products[i].cost);
+        printf("Enter product quantity: ");
+        scanf("%d", &products[i].quantity);
+        fprintf(fp, "%d %f %d\n", products[i].code, products[i].cost, products[i].quantity);
+    }
+    fclose(fp);
+    return 0;
+}

solutions/sharafat/13/9.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+int main()
+{
+    FILE *fp;
+    fp = fopen("products.txt", "r");
+    float sum = 0;
+    while (feof(fp) == 0)
+    {
+        float temp;
+        fscanf(fp, "%*d %f %*d ", &temp);
+        sum += temp;
+    }
+    fclose(fp);
+    printf("Total cost: %f\n", sum);
+    return 0;
+}