Assembly code in C

You can include assembly code using inline assembly. Inline assembly allows you to insert assembly instructions directly into your C code. However, please note that inline assembly is highly dependent on the compiler you are using, and the syntax may vary between compilers. Here’s an example of using inline assembly in C code for the x86 architecture with the GCC compiler:

#include <stdio.h>

int main() {
    int num1 = 5, num2 = 3, result;

    // Inline assembly to add num1 and num2
    asm(
        "add %[input1], %[input2];" // Assembly instruction
        : [result] "=r" (result)    // Output operand
        : [input1] "r" (num1),      // Input operands
          [input2] "r" (num2)
    );

    printf("The result is: %d\n", result);

    return 0;
}

In this example:

1. We declare integer variables num1, num2, and result.
2. We use the asm keyword to introduce inline assembly. Inside the inline assembly block, we write the assembly instructions to add num1 and num2.
3. We use input and output operands specified using constraints. The "%[input1]" and "%[input2]" placeholders represent the input operands, and "=r" (result) represents the output operand.
4. The input and output operands are connected to C variables using the : [result] "=r" (result) and : [input1] "r" (num1), [input2] "r" (num2) syntax.
5. Finally, we print the result.

Please note that inline assembly is compiler-specific, and the syntax may differ if you are using a different compiler or architecture. Always refer to your compiler’s documentation for specific details on inline assembly for your platform.