Storing Formatted Data in C
Im trying to add variables to a C c开发者_如何学Pythonhar array. Also I have tried sprintf
, but it is causing a few other issues within my program.
I am looking to do something like this:
char* age = "My age is = " + age;
I am planning on sending the char array to a socket using send()
s(n)printf is really the right answer here. What issues is it causing? Try and fix those issues vs. throwing the right tool away.
If you can use C++ then just use std::string to get this functionality ...
Under C you just can't do it using operator overloads. "strcat" allows you to concatenate 2 strange. Just make sure you have space to store the resulting string!
Use sprintf()
. Remember to allocate a large enough buffer for the array. Like this:
char buf[24];
sprintf(buf, "My age is = %d", age);
24 char
s are long enough to contain the result here, whatever the value of age
is. I'm assuming that age
is a 32-bit integer.
Of course, if you change the text to something longer, you will have to increase the size of the buffer.
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