diff --git a/C/knapsack.c b/C/knapsack.c
new file mode 100644
index 0000000..a0be2b8
--- /dev/null
+++ b/C/knapsack.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+
+struct data{
+    int profit;
+    int weight;
+    float ratio;
+};
+
+float knapsack(struct data[], int t_weight){
+    int i = 0;
+    float t_profit = 0;
+    while(t_weight > weight[i]){
+        t_profit += profit[i];
+        t_weight -= weight[i];
+        i++;
+        printf("%f\n", t_profit);
+    }
+
+    if(t_weight > 0){
+        t_profit += (float)t_weight / weight[i] * profit[i];
+    }
+
+    return t_profit;
+}
+
+int main()
+{
+    int t_weight = 15;
+    int n = 7;
+
+    printf("Enter the number of Elements: ");
+    scanf("%d", n);
+
+    struct data d[10];
+    printf("Enter profit and weight of Each elements: \n");
+    for (int i = 0; i < n; i++)
+    {
+        scanf("%d %d", d[i].profit, d[i].weight);
+        d[i].ratio = (float)d[i].profit/d[i].weight;
+    }
+    
+
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n-1; j++)
+        {
+            if(d[j].ratio < d[j+1].ratio){
+                int temp = d[j].ratio;
+                d[j].ratio = d[j+1].ratio;
+                d[j+1].ratio = temp;
+
+                temp = d[j].profit;
+                d[j].profit = d[j+1].profit;
+                d[j+1].profit = temp;
+
+                temp = d[j].weight;
+                d[j].weight = d[j+1].weight;
+                d[j+1].weight = temp;
+            }
+        }
+    }
+    
+    float result = knapsack(d, t_weight);
+    printf(">>>%f", result);
+    
+return 0;
+}