C编程问题指针和数组2d

Question

Q2:执行以下函数 ArrPrintMatrix(char *(p)[7]) 打印 matrix[m][7] ={"SHAHBAZ","AYAZ"} 到 3x3 矩阵

示例输出

S H A                      H B A                       Z A Y ..

My question is : here is code only problem i am getting is a space after one name is completed..how to remove that space . I have this question in my assignments , that have to be submitted on sunday (11-11-18)..My code is:

#include<stdio.h>
int main()
{
    void ArrPrintMatrix(char *p);//function declaration
    char matrix[2][8] ={"SHAHBAZ","AYAZ"};//2d array initiliation
    ArrPrintMatrix(&matrix[0][0]);//calling function with base address

}

void ArrPrintMatrix(char *p)
{
    int i;
    for(i=0;i<16;i++)
    {
        if(i>=9)//since 3 by 3 matrix is required
            break;
        if(i==3||i==6||i==9)//changing line since 3 by 3 matrix is needed
            printf("\n");
        printf("%c ",*(p+i));//prininting chracters

    }
}

Answer 1

你应该使用 char (*p)[8] 而不是 char* p

以下代码可能会出错:

#include<stdio.h>
int main()
{
    void ArrPrintMatrix(char (*p)[8]);//function declaration
    char matrix[2][8] ={"SHAHBAZ","AYAZ"};//2d array initiliation
    ArrPrintMatrix(matrix);//calling function with base address

}
void ArrPrintMatrix(char (*p)[8])
{
    // i will point to one of the strings in the set of strings
    // j will point into the string we are inspecting
    // k will count how many characters we have printed
    int i = 0, j = 0, k = 0;

    // we only need to print the first 9 printable characters we find
    while (k != 9)
    {
        // if we have reached the end of an input string (the null-terminator),
        // then move on to the next element in the array, and reset
        // the string pointer to the beginning of the new string
        if (p[i][j] == '\0') {
            ++i;
            j = 0;
        }

        // print the character we are now pointing at,
        // and increment the string pointer
        printf("%c ", p[i][j++]);

        // keep count of how many characters we have printed
        ++k;

        // if k is divisible by 3, start a new row
        if(k%3 == 0)
            printf("\n");
    }
}