[英]How to resolve “ invalid operands of types 'const char [ ]' and 'const char*' to binary 'operator+' ”
我使用Qt Creator和以下代码：
string execpath = "";
execpath += (QCoreApplication::applicationDirPath()).toStdString();
WinExec("ffmpeg -f dshow -t 32 -i audio=\"virtual-audio-capturer\" -y "+(execpath.c_str())+"\\sound.mp3", SW_HIDE); // Loopback captured in sound.mp3
在第3行产生此问题：
类型'const char [60]'和'const char *'的无效操作数为二进制'operator +'
怎么解决呢？
您将需要类似：
execpath += (QCoreApplication::applicationDirPath()).toStdString();
std::string cmd = "ffmpeg -f dshow -t 32 -i audio=\"virtual-audio-capturer\" -y "
WinExec((cmd +execpath +"\\sound.mp3").c_str(), SW_HIDE);
二进制“ operator +”类型为“ const char [8]”和“ const char *”类型的无效操作数
[英]Invalid operands of types ‘const char [8]’ and ‘const char*’ to binary ‘operator+
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[英]invalid operands of types 'const char*' and const char[4]' to binary 'operator+'
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[英]C++ invalid operands of types 'const char*' and 'const char [2]' to binary 'operator+'
错误：类型为“const char*”和“const char*”的无效操作数到二进制“operator+”
[英]error: invalid operands of types 'const char*' and 'const char*' to binary 'operator+'
错误：类型为“const char [35]”和“const char [2]”的无效操作数到二进制“operator+”
[英]Error: invalid operands of types ‘const char [35]’ and ‘const char [2]’ to binary ‘operator+’
将类型为'char *'和'const char [2]'的c ++无效操作数转换为二进制'operator +'
[英]c++ invalid operands of types 'char*' and 'const char [2]' to binary 'operator+'
'const char [18]' 和 'const char*' 类型的无效操作数到二进制 'operator
[英]invalid operands of types ‘const char [18]’ and ‘const char*’ to binary ‘operator
类型为“ double”和“ const char [5]”的C ++无效操作数为二进制“ operator +”
[英]C++ invalid operands of types 'double' and 'const char [5]' to binary 'operator+'
C ++：错误：类型'String *'和'const char [7]'到二进制'operator +'的操作数无效
[英]C++ : error: invalid operands of types ‘String*’ and ‘const char [7]’ to binary ‘operator+’
无效的 char 和 const char[2] 类型的操作数到二元运算符
[英]Invalid Operands of types char and const char[2] to binary operator
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