C指针char到小写

Question

我有指针数组，我想小写，我该怎么做？

char *myPointer = "HELLO MY NAME IS POINTER";

for(....)
    myPointer[i] = tolower(myPointer[i]);

使我的应用程序崩溃。 我需要使用指针!

谢谢

Answer 1

myPointer 指向一个字符串字面量，修改为undefined behaviour .如果您希望能够修改它，则可以改用数组:

char myPointer[]= "HELLO MY NAME IS POINTER";