在结构中动态输入值并打印这些值

如何解决在结构中动态输入值并打印这些值

我为结构螺柱编写了此代码，该代码将输入要存储其记录的学生人数，然后打印出来。我不确定我到底要去哪里。

#include<stdio.h>
struct stud{
int id;
char name[50];
float points;
}s[1000];

int main(){

     int i,n;
     scanf("%d",&n);

     for(int i=0;i<n;i++){
         scanf("%d",&s[i].id);
         scanf("%c",s[i].name);
         scanf("%f",&s[i].points);
        }
       
       for(i=0;i<n;i++){
           printf("ID: %d\n",s[i].id);
           printf("First Name: %c\n",s[i].name);
           printf("Points: %f\n",s[i].points);
        }

       return 0;
 }

解决方法

更改

function Square(props) {
  return (
    <button className="square" onClick={props.onClick}>
      {props.value}
    </button>
  );
}

class Board extends React.Component {
  renderSquare(i) {
    return (
      <Square
        value={this.props.squares[i]}
        onClick={() => this.props.onClick(i)}
      />
    );
  }
  render() {
    return (
      <div>
        <div className="board-row">
          {this.renderSquare(0)}
          {this.renderSquare(1)}
          {this.renderSquare(2)}
        </div>
        <div className="board-row">
          {this.renderSquare(3)}
          {this.renderSquare(4)}
          {this.renderSquare(5)}
        </div>
        <div className="board-row">
          {this.renderSquare(6)}
          {this.renderSquare(7)}
          {this.renderSquare(8)}
        </div>
      </div>
    );
  }
}

class Game extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      history: [{
        squares: Array(9).fill(null)
      }],stepNumber: 0,xIsNext: true,};
  }
  handleClick(i) {
    const history = this.state.history.slice(0,this.state.stepNumber + 1);
    const current = history[history.length - 1];
    const squares = current.squares.slice();
    if (calculateWinner(squares) || squares[i]) {
      return;
    }
    squares[i] = this.state.xIsNext ? 'X' : 'O';
    this.setState({
      history: history.concat([{
        squares: squares,}]),stepNumber: history.length,xIsNext: !this.state.xIsNext,});
  }

  jumpTo(step) {
    this.setState({
      stepNumber: step,xIsNext: (step % 2) === 0,});
  }
  render() {
    const history = this.state.history;
    const current = history[this.state.stepNumber];
    const winner = calculateWinner(current.squares);

    // history of moves each as a <li>
    const moves = history.map((step,move) => {
      const desc = move ?
      'Go to move #' + move :
      'Go to game start';
      return (
        <li key={move}>
          <Button onClick={() => this.jumpTo(move)}>{desc}</Button>
        </li>
      );
    });

    // determine winner
    let status;
    if (winner) {
      status = 'Winner: ' + winner;
    } else {
      status = 'Next player: ' + (this.state.xIsNext ? 'X' : 'O');
    }

    return (
      <div className="game">
        <div className="game-board">
          <Board
            squares={current.squares}
            onClick={(i) => this.handleClick(i)} // this guy
          />
        </div>
        <div className="game-info">
          <div>{status}</div>
          <ol>{moves}</ol>
        </div>
      </div>
    );
  }
}

至少

 scanf("%c",s[i].name);

，也与 scanf("%49s",s[i].name); 调用相同。 printf()用于单个%c，对于字符串，则需要char。另外，不要忘记检查%s的返回值是否成功。

话虽如此，最好使用fgets()进行用户输入。像

scanf()