Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
125108 陈棋 22第n项的数 C++ Compile Error 0 MS 0 KB 226 2025-07-13 13:44:02

Tests(0/0):

Code:

int a[4],c1,c2,n; float b; cin>>n; for(int i=0;i<4;i++){ cin>>a[i]; } c1=a[1]-a[0]; c2=a[3]-a[2]; b=a[1]/a[0]; if(c1==c2) cout<<a[0]+c1*(n-1); else{ cout<<int(a[0]*pow(b,(n-1))); }

Run Info:

Main.cc:3:5: error: 'cin' does not name a type
     cin>>n;
     ^
Main.cc:4:5: error: expected unqualified-id before 'for'
     for(int i=0;i<4;i++){
     ^
Main.cc:4:17: error: 'i' does not name a type
     for(int i=0;i<4;i++){
                 ^
Main.cc:4:21: error: 'i' does not name a type
     for(int i=0;i<4;i++){
                     ^
Main.cc:7:2: error: 'c1' does not name a type
  c1=a[1]-a[0];
  ^
Main.cc:8:2: error: 'c2' does not name a type
  c2=a[3]-a[2];
  ^
Main.cc:9:2: error: 'b' does not name a type
  b=a[1]/a[0];
  ^
Main.cc:10:2: error: expected unqualified-id before 'if'
  if(c1==c2)
  ^
Main.cc:12:2: error: expected unqualified-id before 'else'
  else{
  ^