C语言中的sscanf和sprintf常见用途

int sprintf(char *str, const char *format, ...);

#include <stdio.h>
int main() {
    char buffer[100];
    int age = 25;
    float height = 1.78;
    char name[] = "Alice";
    // 将多个变量格式化为一个字符串
    sprintf(buffer, "Name: %s, Age: %d, Height: %.2f", name, age, height);
    printf("Formatted string: %s\n", buffer);
    // 输出：Formatted string: Name: Alice, Age: 25, Height: 1.78
    return 0;
}

int sscanf(const char *str, const char *format, ...);

#include <stdio.h>
int main() {
    char input[] = "John 30 1.75";
    char name[50];
    int age;
    float height;
    // 从字符串中解析姓名、年龄和身高
    int result = sscanf(input, "%s %d %f", name, &age, &height);
    if (result == 3) {
        printf("Name: %s, Age: %d, Height: %.2f\n", name, age, height);
        // 输出：Name: John, Age: 30, Height: 1.75
    } else {
        printf("Parsing failed!\n");
    }
    return 0;
}

char line[] = "Date: 2023-10-05, Temperature: 23.5C";
int year, month, day;
float temp;
// 提取日期和温度
sscanf(line, "Date: %d-%d-%d, Temperature: %fC", &year, &month, &day, &temp);
printf("Year: %d, Month: %d, Day: %d, Temp: %.1f°C\n", year, month, day, temp);

int snprintf(char *str, size_t size, const char *format, ...);