sprintf与sscanf用法举例

一、sscanf　

从tmp中读取a,b,c。　

int main(){
    char tmp[];
    int a;
    double b;
    char c[];
    while(gets(tmp) != NULL){
        sscanf(tmp, "%d%lf%s", &a, &b, c);
        printf("%d\n%.2lf\n%s\n", a, b, c);
    }
    return ;
}

二、sprintf

将a,b,c输出到tmp中

int main(){
    char tmp[];
    int a = ;
    double b = 2.3;
    char c[] = "weabab";
    sprintf(tmp, "%d\n%.2lf\n%s", a, b, c);
    printf("%s\n", tmp);
    return ;
}