what is the function that acts like SYSTEM(const char *) and takes no const char but a dynamic produced query

i want to write a program that will create a file by passing the string to th开发者_如何学Goe shell at program executes . this can be done by the system() but i want to use this function , for many arguments in a loop . using system(char *) its giving error . is there any other way

i tried a lot plz somebody help me .

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Conversion from char* to const char* is implicit and will work. The problem is elsewhere.

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const char *s has nothing to do with what it expects to find in s. It is a promise to you, made by the function, that the function will not modify the contents of s.

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You can either use system as mentioned and programmatically modify the char * that you pass it, or you can use a function of the exec family (exec, execve, execvp, etc... depending on what is available on your system).

Please read the man of system and exec carefully: they do not do exactly the same thing. You may want to have a look at the man of fork as well if you go the exec way.

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It sounds like you're looking for execv. The behavior isn't quite identical, but it's close. See also execl. They share the same man page.