diff --git a/simple_calc/maths.o b/simple_calc/maths.o
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index 00000000..24467ec6
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diff --git a/simple_calc/maths.s b/simple_calc/maths.s
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+++ b/simple_calc/maths.s
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+.section .text # This tells that the text below is code
+
+    .global add # add is defined as global
+    #xmm registers are used for SIMD and floating points
+    add:
+        addss %xmm1, %xmm0 #xmm0=xmm0+xmm1
+        ret
+
+    .global sub
+    sub:
+        subss %xmm1, %xmm0 #xmm0=xmm0-xmm1
+        ret
+
+    .global mul
+    mul:
+        mulss %xmm1,%xmm0 #xmm0=xmm0*xmm1
+        ret
+
+    .global fdiv #we use fdiv so that we dont get issue of name conflict with stdlib.h in c
+    fdiv:
+        divss %xmm1, %xmm0 #xmm0=xmm0/xmm1
+        ret#end of the code 
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diff --git a/simple_calc/simple_calc b/simple_calc/simple_calc
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diff --git a/simple_calc/simple_calc.c b/simple_calc/simple_calc.c
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index 00000000..0f4b1439
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+++ b/simple_calc/simple_calc.c
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+#include <stdio.h>
+
+// float functions from assembly
+extern float add(float a, float b);
+extern float sub(float a, float b);
+extern float mul(float a, float b);
+extern float fdiv(float a, float b);
+
+int main() {
+    float x, y, result;
+    int choice;
+
+    while (1) {
+        printf("\nChoose operation:\n");
+        printf("1. Add\n2. Subtract\n3. Multiply\n4. Divide\n5. Exit\n");
+        printf("Enter choice: ");
+        scanf("%d", &choice);
+
+        if (choice == 5) {
+            printf("Exiting calculator. Goodbye!\n");
+            break;
+        }
+
+        printf("Enter x: ");
+        scanf("%f", &x);
+        printf("Enter y: ");
+        scanf("%f", &y);
+
+        switch (choice) {
+            case 1:
+                result = add(x, y);
+                printf("Sum of %.2f & %.2f is %.2f\n", x, y, result);
+                break;
+            case 2:
+                result = sub(x, y);
+                printf("Difference of %.2f & %.2f is %.2f\n", x, y, result);
+                break;
+            case 3:
+                result = mul(x, y);
+                printf("Product of %.2f & %.2f is %.2f\n", x, y, result);
+                break;
+            case 4:
+                if (y == 0.0f) {
+                    printf("Error: Division by zero!\n");
+                    break;
+                }
+                result = fdiv(x, y);
+                printf("Division of %.2f / %.2f is %.2f\n", x, y, result);
+                break;
+            default:
+                printf("Invalid choice! Please select 1-5.\n");
+                break;
+        }
+    }
+
+    return 0;
+}
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