Question

下面的代码应该从用户char s1[] = "[1 -2.5 3;4 5.25 6;7 8 9.12]";输入并只取其中的数字，然后将其转换为浮点数并将其放入数组中但是当我尝试退出数组时，它只打印数字

char s1[] = "[1 -2.5 3;4 5.25 6;7 8 9.12]";
char s2 [100] ;
float matrix [2][2];
char* cutter(char s[])
{

    char delim[] = " ;][";
    char *token = strtok(s,delim);
    while (token)
    {
        cout << token << endl;

        token = strtok(NULL,delim);

        for(int i=0;i<2;i++){
            for(int j=0;j< 2;j++){
                matrix [i][j]=strtof(token, NULL);
            }
        }

    }

return token;
}

void showmatrix(float m[2][2]){
    for(int i=0;i<2;i++){
            for(int j=0;j<2;j++){
                cout << m[i][j];
            }
        }
}

int main(){
    cutter(s1);
    showmatrix(matrix);
    //cin.getline(s2,100);
    //cutter(s2);

}

Answer 1

您的代码未在我的计算机上运行。您应该按照其他人的建议更改循环条件，并在I link against these libraries: - PhysX_32.lib - PhysXCommon_32.lib - PhysXCooking_32.lib - PhysXFoundation_32.lib I redistribute these DLL files: - PhysX_32.dll - PhysXCommon_32.dll - PhysXCooking_32.dll - PhysXFoundation_32.dll - PhysXGpu_32.dll函数中移动token = strtok(NULL,delim);代码的位置。

此代码运行：

cutter

另外，请尝试发布完整的代码示例，包括任何#include <iostream> using namespace std; char s1[] = "[1 -2.5 3;4 5.25 6;7 8 9.12]"; //char s2 [100] ; float matrix [2][2]; char* cutter(char s[]) { char delim[] = " ;]["; char *token = strtok(s,delim); while (token) { cout << token << endl; for (int i = 0; i < 2; i++) { for (int j = 0; j < 2; j++) { matrix[i][j] = strtof(token, NULL); } } token = strtok(NULL,delim); } return token; } void showmatrix(float m[2][2]){ for(int i=0;i<2;i++){ for(int j=0;j< 2;j++){ cout << m[i][j]; } } } int main(){ cutter(s1); showmatrix(matrix); //cin.getline(s2,100); //cutter(s2); }声明和随附的标头。

无法打印数组或分配给它

1 个答案: