- 入门测试1：大小写转换
你们谁知道这题咋做？
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（￣～￣）好无聊 (董启航)
LV 8
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2025-4-9 18:01:28
401好难好难好难好难好难
4 条评论
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MC小人 (周丞艺) LV 5 @ 2025-8-7 20:11:01#include<bits/stdc++.h> using namespace std; int n,a[505]; int main(){ ios::sync_with_stdio(false);cin.tie(0); cin>>n; a[1]=1;a[2]=1; for(int i=3;i<=n;i++) a[i]=a[i-1]+a[i-2]; cout<<a[1]; for(int i=2;i<=n;i++) cout<<','<<a[i];
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@ 2025-8-1 11:03:30#include<bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if(int(a)>=97){ cout<<char(int(a)-32); } else{ cout<<char(int(a)+32); } return 0; } -
@ 2025-4-16 16:12:43我也不会
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@ 2025-4-12 8:13:15#include<bits/stdc++.h> using namespace std; int main() { string s; getline(cin,s); int len; len=s.size(); for(int i=0;i<len;++i) { if(s[i]>='a'&&s[i]<='z') s[i]-=32; else if(s[i]>='A'&&s[i]<='Z') s[i]+=32; } cout<<s; return 0; }
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@ 2025-5-5 17:14:01
#include<bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if(a=='a'){ cout<<"A"; } if(a=='A'){ cout<<"a"; } if(a=='b'){ cout<<"B"; } if(a=='B'){ cout<<"b"; } if(a=='c'){ cout<<"C"; } if(a=='C'){ cout<<"c"; } if(a=='d'){ cout<<"D"; } if(a=='D'){ cout<<"d"; } if(a=='e'){ cout<<"E"; } if(a=='E'){ cout<<"e"; } if(a=='f'){ cout<<"F"; } if(a=='F'){ cout<<"f"; } if(a=='g'){ cout<<"G"; } if(a=='G'){ cout<<"g"; } if(a=='h'){ cout<<"H"; } if(a=='H'){ cout<<"h"; } if(a=='i'){ cout<<"I"; } if(a=='I'){ cout<<"i"; } if(a=='j'){ cout<<"J"; } if(a=='J'){ cout<<"j"; } if(a=='k'){ cout<<"K"; }if(a=='K'){ cout<<"k"; } if(a=='l'){ cout<<"L"; } if(a=='L'){ cout<<"l"; } if(a=='m'){ cout<<"M"; } if(a=='M'){ cout<<"m"; } if(a=='n'){ cout<<"N"; } if(a=='N'){ cout<<"n"; } if(a=='o'){ cout<<"O"; } if(a=='O'){ cout<<"o"; } if(a=='p'){ cout<<"P"; } if(a=='P'){ cout<<"p"; } if(a=='q'){ cout<<"Q"; } if(a=='Q'){ cout<<"q"; } if(a=='r'){ cout<<"R"; } if(a=='R'){ cout<<"r"; } if(a=='s'){ cout<<"S"; } if(a=='S'){ cout<<"s"; } if(a=='t'){ cout<<"T"; } if(a=='T'){ cout<<"t"; } if(a=='u'){ cout<<"U"; } if(a=='U'){ cout<<"u"; } if(a=='v'){ cout<<"V"; } if(a=='V'){ cout<<"v"; } if(a=='w'){ cout<<"W"; } if(a=='W'){ cout<<"w"; } if(a=='x'){ cout<<"X"; } if(a=='X'){ cout<<"x"; } if(a=='y'){ cout<<"Y"; } if(a=='Y'){ cout<<"y"; } if(a=='z'){ cout<<"Z"; } if(a=='Z'){ cout<<"z"; } return 0; }
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