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26 lines
812 B
26 lines
812 B
#include <bits/stdc++.h>
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using namespace std;
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char c;//操作符
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int n, a, B;
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char s[100];
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int main() {
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cin >> n;
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while (n--) {
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//学习scanf和sprintf两个函数的用法
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//返回值的含义：正确按指定格式输入变量的个数；也即能正确接收到值的变量个数。
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//当scanf函数的第一个变量格式不正确时返回值为0
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int f = scanf("%d %d", &a, &b);
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if (!f) scanf("%c %d %d", &c, &a, &b);
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//sprintf 是按格式拼接一个字符串
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if (c == 'a') sprintf(s, "%d+%d=%d", a, b, a + b);
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else if (c == 'b') sprintf(s, "%d-%d=%d", a, b, a - b);
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else sprintf(s, "%d*%d=%d", a, b, a * b);
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//输出大吉
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printf("%s\n%d\n", s, strlen(s));
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}
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return 0;
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} |