c - C语言如何收集多个格式参数？

Question

我有以下代码，我要求用户输入一个字符串“towers”，后跟整数。当我尝试扫描数据输入时，给出以下信息:

这是代码:

#include <stdio.h>   
#include <stdlib.h>   
#include <string.h>

int main(int argc, char **argv)

{
int n, from, dest;
char code[]= "towers";


printf ("Code?");
scanf ("%c ", &code);

printf ("Code?");
scanf ("%d %d %d", &n, &from, &dest);


if (strcmp(code,"towers")==0 && n==0){
n=3;
from = 1;
dest = 2;
    if (argc > 1){ 
        n = atoi(argv[1]);
    }
    towers(n, from, dest);
    exit(0);
}
else{
printf ("nothing\n");
printf ("%d",n);
}
}

我想要实现的是检查用户输入是单独键入“towers”还是键入“towers”后跟一组其他三个整数。非常感谢您的帮助!

Answer 1

char line[80];
int a, b, c;
fgets(line, 80, stdin);

if (sscanf(line, "towers %d%d%d", &a, &b, &c) == 3)
    /* read in towers and three ints */
else if (strcmp(line, "towers") == 0)
    /* read in towers */