linux sscanf 格式化输入技巧有哪些

sscanf???C?????,??????????????

1. ???????:?sscanf???????,???????????????????,?????????????????,????????:

int a, b;
char input[] = "10 20";
sscanf(input, "%d %d", &a, &b);

2. ??????:???????,????????????,??%d????,%f?????,%s?????????:

int a;
float b;
char input[] = "10 20.5";
sscanf(input, "%d %f", &a, &b);

3. ??????:???????????????,??????????????[]???,?????????????,????????:

int a, b;
char input[] = "10,20";
sscanf(input, "%d[,]%d", &a, &b);

4. ???????:???????,?????%n(??n?????)????????????,????????10???????,????????:

char str[11];
char input[] = "Hello, World!";
sscanf(input, "s", str);

5. ??????????:?????????????,???????????????????????????,???????"Name:"??????,????????:

char name[20];
char input[] = "Name: John Doe";
sscanf(input, "Name: s", name);

6. ??????:?????????????????,????%n?????????????????:

int a, b;
char input1[] = "10";
char input2[] = "10 20";
int count;

sscanf(input1, "%d%n", &a, &count);
if (count == strlen(input1)) {
    b = 0; // ?????
} else {
    sscanf(input1 + count, " %d", &b);
}

sscanf(input2, "%d%n", &a, &count);
if (count == strlen(input2)) {
    b = 0; // ?????
} else {
    sscanf(input2 + count, " %d", &b);
}

???????????????sscanf??????????????????,sscanf?????????????????????,??????????????