Research on compatibility between Go language and C language

Exploration on the compatibility of Go language and C language

In recent years, Go language as a programming language has attracted much attention in the Internet industry and has gradually become a One of the top choices. In contrast, C language, as a more traditional programming language, still plays a decisive role in system-level development and performance optimization. This article will delve into the compatibility between Go language and C language, combine specific code examples to show the similarities and differences between them, and explore how to effectively interact between the two languages.

1. Comparison of data types

In the Go language, the definition of data types is relatively simple, and a rich standard library is provided for processing various data types. In comparison, the definition of data types in C language is more low-level and refined, and addresses in memory can be directly manipulated. Below we use a simple example to compare the definition and operation of data types in the two languages:

1. Go language example:

package main

import "fmt"

func main() {
    var num int = 10
    fmt.Println(num)
}

2. C language example:

#include <stdio.h>

int main() {
    int num = 10;
    printf("%d
", num);
    return 0;
}

As can be seen from the above example, although the Go language and the C language are different in the way of defining data types, they are basically the same in the processing of basic data types, and can be processed through similar Grammar accomplishes the same thing.

2. Function calling and parameter passing

In the actual development process, function calling and parameter passing are common operations in programming. Go language and C language also have some similarities in function calling and parameter passing. Let’s take a look at an example:

1. Go language example:

package main

import "fmt"

func sum(a, b int) int {
    return a + b
}

func main() {
    result := sum(5, 3)
    fmt.Println(result)
}

2. C language example:

#include <stdio.h>

int sum(int a, int b) {
    return a + b;
}

int main() {
    int result = sum(5, 3);
    printf("%d
", result);
    return 0;
}

As can be seen from the above example, in terms of function calling and parameter passing operations, the syntax similarity between Go language and C language is relatively high, which is convenient for developers. Switch between two languages.

3. Codes calling each other

Although Go language and C language have many similarities in syntax, they have some differences in underlying memory management and mechanisms. In actual development, sometimes it is necessary to interact between Go language and C language. Below we use an example to demonstrate this process:

1. Example of Go language calling C language:

package main

/*
#include <stdio.h>

int power(int a, int b) {
    int result = 1;
    for(int i = 0; i < b; i++) {
        result *= a;
    }
    return result;
}
*/
import "C"
import "fmt"

func main() {
    result := C.power(2, 3)
    fmt.Println(result)
}

2. Example of C language calling Go language:

The above is an example of Go language calling C language. Now let’s take a look at how C language calls Go language. Function:

First, we need to export the Go language function into a dynamic link library (dll) that can be used in C language.

go build -buildmode=c-shared -o mygolib.dll mygolib.go

Then call the Go language function in C language:

#include <stdio.h>
#include <dlfcn.h>

int main() {
    void* handle = dlopen("./mygolib.dll", RTLD_LAZY);
    if (!handle) {
        fprintf(stderr, "%s
", dlerror());
        return -1;
    }

    void (*myFunc)();
    myFunc = dlsym(handle, "MyFunc");

    if (!myFunc) {
        fprintf(stderr, "%s
", dlerror());
        return -1;
    }

    myFunc();

    dlclose(handle);

    return 0;
}

Through the above example, we can see that Go language and C language can call each other. In practical applications, we can choose the appropriate method to implement cross-language calls based on specific needs.

Conclusion

To sum up, this article explores the differences between Go language and C language by comparing their data types, function calls and parameter transfers, and code mutual calls. Compatibility and interactivity. By gaining a deeper understanding of the similarities and differences between the two languages, developers can better leverage their strengths and improve development efficiency and code quality. I hope this article can inspire readers, and you are welcome to continue to pay attention to the discussion about the interaction between programming languages.

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