WenxinHu @ 2023-03-05 13:08:07
#include<iostream>
#include<string>
using namespace std;
int number(int n)//求数字有几位数
{
int count = 0;
while (n / 10 != 0)
{
count++;
n /= 10;
}
return count+1;
}
int main()
{
int i = 0;
cin >> i;
//getline(cin, i);
string arr[50];
cin.ignore();
char sig='a';
for (int m = 1; m <= i; m++)
{
getline(cin, arr[m]);
}
for (int m = 1; m <= i; m++)
{
if (arr[m][0] == 'a')//+
{
int a = 0, b = 0;
char sig = arr[m][0];
for (int j = 0; j < arr[m].length(); j++)
{
if (arr[m][j] <= '9' && arr[m][j] >= '0')
{
a += arr[m][j] - '0';
while (arr[m][j + 1] != ' ' && (j + 1) != arr[m].length())
{
a *= 10;
break;
}
}
else if (arr[m][j] == ' ')
{
b = a;
a = 0;
continue;
}
}
cout << b << '+' << a << '=' << b + a << endl;
cout << number(a) + number(b) + number(a + b) + 2<<endl;
}
else if (arr[m][0] == 'b')//-
{
char sig = arr[m][0];
int a = 0, b = 0;
for (int j = 0; j < arr[m].length(); j++)
{
if (arr[m][j] <= '9' && arr[m][j] >= '0')
{
a += arr[m][j] - '0';
while (arr[m][j + 1] != ' ' && (j + 1) != arr[m].length())
{
a *= 10;
break;
}
}
else if (arr[m][j] == ' ')
{
b = a;
a = 0;
continue;
}
}
cout << b << '-' << a << '=' << b - a << endl;
cout << number(a) + number(b) + number(a + b) + 2<<endl;
}
else if (arr[m][0] == 'c')//*
{
int a = 0, b = 0;
char sig = arr[m][0];
for (int j = 0; j < arr[m].length(); j++)
{
if (arr[m][j] <= '9' && arr[m][j] >= '0')
{
a += arr[m][j] - '0';
while (arr[m][j + 1] != ' ' && (j + 1) != arr[m].length())
{
a *= 10;
break;
}
}
else if (arr[m][j] == ' ')
{
b = a;
a = 0;
continue;
}
}
cout << b << '*' << a << '=' << b * a << endl;
cout << number(a) + number(b) + number(a * b) + 2<<endl;
}
else
{
if (sig == 'a')//+
{
int a = 0, b = 0;
char sig = arr[m][0];
for (int j = 0; j < arr[m].length(); j++)
{
if (arr[m][j] <= '9' && arr[m][j] >= '0')
{
a += arr[m][j] - '0';
while (arr[m][j + 1] != ' ' && (j + 1) != arr[m].length())
{
a *= 10;
break;
}
}
else if (arr[m][j] == ' ')
{
b = a;
a = 0;
continue;
}
}
cout << b << '+' << a << '=' << b + a << endl;
cout << number(a) + number(b) + number(a + b) + 2<<endl;
}
else if (sig == 'b')//-
{
char sig = arr[m][0];
int a = 0, b = 0;
for (int j = 0; j < arr[m].length(); j++)
{
if (arr[m][j] <= '9' && arr[m][j] >= '0')
{
a += arr[m][j] - '0';
while (arr[m][j + 1] != ' ' && (j + 1) != arr[m].length())
{
a *= 10;
break;
}
}
else if (arr[m][j] == ' ')
{
b = a;
a = 0;
continue;
}
}
cout << b << '-' << a << '=' << b - a << endl;
cout << number(a) + number(b) + number(a + b) + 2<<endl;
}
else if (sig == 'c')//*
{
int a = 0, b = 0;
char sig = arr[m][0];
for (int j = 0; j < arr[m].length(); j++)
{
if (arr[m][j] <= '9' && arr[m][j] >= '0')
{
a += arr[m][j] - '0';
while (arr[m][j + 1] != ' ' && (j + 1) != arr[m].length())
{
a *= 10;
break;
}
}
else if (arr[m][j] == ' ')
{
b = a;
a = 0;
continue;
}
}
cout << b << '*' << a << '=' << b * a << endl;
cout << number(a) + number(b) + number(a * b) + 2<<endl;
}
}
}
return 0;
}by 已注销hUjZvzYv @ 2023-03-05 13:12:02
代码写错了
666
by Zbc20211226 @ 2023-03-19 19:33:27
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
int x[n],y[n];
char c[n];
for(int i=0;i<n;++i){
string a;
cin>>a;
if(a[0]>='a'){
cin>>x[i]>>y[i];
c[i]=a[0];
}
else{
int l=a.size(),j=0;x[i]=0;
while(j<l){
x[i]=x[i]*10+(a[j]-'0');
++j;}
cin>>y[i];
c[i]=c[i-1];
}
}
for(int i=0;i<n;++i){
int s,e,f=1;
if(c[i]=='a'){
s=x[i]+y[i];
e=abs(s);
while(e>=10){
e/=10;++f;
}
printf("%d+%d=%d\n",x[i],y[i],s);
}
else if(c[i]=='b'){
s=x[i]-y[i];
e=abs(s);
while(e>=10){
e/=10;++f;
}
printf("%d-%d=%d\n",x[i],y[i],s);
}
else{
s=x[i]*y[i];
e=abs(s);
while(e>=10){
e/=10;++f;
}
printf("%d*%d=%d\n",x[i],y[i],s);
}
if(s<0)++f;
while(x[i]>=10){
x[i]/=10;++f;
}
while(y[i]>=10){
y[i]/=10;++f;
}
printf("%d\n",f+4);
}
}用getline会从第一行开始读，过不了