```cpp
#include<bits/stdc++.h>
using namespace std;
char yunsuanfu;
int n, num1, num2;
char s[100], b[10];
int main() {
cin >> n;
for (int i = 0; i < n; i++) {
cin >> b;
if (b[0] >= 'a' && b[0] <= 'z') {
yunsuanfu = b[0];
cin >> num1 >> num2;
} else {
sscanf(b, "%d", &num1);
cin >> num2;
}
memset(s, 0, sizeof(s));
if (yunsuanfu == 'a') {
sprintf(s, "%d+%d=%d", num1, num2, num1 + num2);
} else if (yunsuanfu == 'b') {
sprintf(s, "%d-%d=%d", num1, num2, num1 - num2);
} else if (yunsuanfu == 'c') {
sprintf(s, "%d*%d=%d", num1, num2, num1 * num2);
}
cout << s << endl << strlen(s) << endl;
}
return 0;
}
```
@[TachibanaMarika](/user/1082496)
by GXZJQ @ 2024-01-04 18:34:37