我有这段代码:
void drawInitialNim(int num1, int num2, int num3)
{
int board[2][50]; //make an array with 3 columns
int i; // i, j, k are loop counters
int j;
int k;
for(i=0;i<num1+1;i++) //fill the array with rocks, or 'O'
board[0][i] = 'O'; //for example, if num1 is 5, fill the first row with 5 rocks
for (i=0; i<num2+1; i++)
board[1][i] = 'O';
for (i=0; i<num3+1; i++)
board[2][i] = 'O';
for (j=0; j<2;j++) { //print the array
for (k=0; k<50;k++) {
printf("%d",board[j][k]);
}
}
return;
}
int main()
{
int numRock1,numRock2,numRock3;
numRock1 = 0;
numRock2 = 0;
numRock3 = 0;
printf("Welcome to Nim!\n");
printf("Enter the number of rocks in each row: ");
scanf("%d %d %d", &numRock1, &numRock2, &numRock3);
drawInitialNim(numRock1, numRock2, numRock3); //call the function
return 0;
}
当我使用gcc编译它时,它很好。当我运行该文件时,输入值后我得到了中止陷阱6错误。
我查看了有关此错误的其他帖子,但他们没有帮助我。
答案 0 :(得分:27)
你写的是你不拥有的记忆:
int board[2][50]; //make an array with 3 columns (wrong)
//(actually makes an array with only two 'columns')
...
for (i=0; i<num3+1; i++)
board[2][i] = 'O';
^
更改此行:
int board[2][50]; //array with 2 columns (legal indices [0-1][0-49])
^
致:
int board[3][50]; //array with 3 columns (legal indices [0-2][0-49])
^
创建数组时,用于初始化[3]
的值表示数组大小
访问现有阵列时,索引值零基于。
对于创建的数组:int board[3][50];
法律指数是董事会[0] [0] ......董事会[2] [49]
编辑 解决错误的输出评论和初始化评论
添加额外的&#34; \ n&#34;用于格式化输出:
更改:
...
for (k=0; k<50;k++) {
printf("%d",board[j][k]);
}
}
...
要:
...
for (k=0; k<50;k++) {
printf("%d",board[j][k]);
}
printf("\n");//at the end of every row, print a new line
}
...
初始化 电路板变量:
int board[3][50] = {0};//initialize all elements to zero
答案 1 :(得分:0)
试试这个:
void drawInitialNim(int num1, int num2, int num3){
int board[3][50] = {0}; // This is a local variable. It is not possible to use it after returning from this function.
int i, j, k;
for(i=0; i<num1; i++)
board[0][i] = 'O';
for(i=0; i<num2; i++)
board[1][i] = 'O';
for(i=0; i<num3; i++)
board[2][i] = 'O';
for (j=0; j<3;j++) {
for (k=0; k<50; k++) {
if(board[j][k] != 0)
printf("%c", board[j][k]);
}
printf("\n");
}
}