system("command") string in string problem

Question

have a problem with system("command"). I want to start .exe with some parameters but "B0 P1" cant be compiled because of use "" in command string. Any solution/tips :)?

int main() {
    system ("start C:\\PROGRA~2\\BEL\\Realterm\\realterm.exe FIRST=1 SENDSTR= "B0 P3" ");
}

Have you tried escaping them? How come you are not escaping the backslashes? — Eljay
– Eljay, Commented Apr 19, 2019 at 13:24
You can escape the quotes inside your string with a backslash. — Anon Mail
– Anon Mail, Commented Apr 19, 2019 at 13:24

Sandro · Accepted Answer · 2019-04-19 15:40:06Z

3

You need to escape quote characters inside your string:

int main() {
    system ("start C:\\PROGRA~2\\BEL\\Realterm\\realterm.exe FIRST=1 SENDSTR= \"B0 P3\" ");
}

In c++ 11 you can also use string literal R"(...)" if you don't want to escape characters:

int main() {
    system ( R"(start C:\PROGRA~2\BEL\Realterm\realterm.exe FIRST=1 SENDSTR= "B0 P3")" );
}

edited Apr 19, 2019 at 15:40

answered Apr 19, 2019 at 13:44

Sandro

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