strcat concat a char onto a string?

Question

Using GDB, I find I get a segmentation fault when I attempt this operation:

strcat(string,¤tChar);

Given that string is initializ

Answer 1

The first argument of strcat must have enough space to hold the rest of the string. "" is a constant string and as such GCC does not allocate space.

Make it an array with enough space:

char buf[1024];

strcat(buf, "");
strcat(buf, "B");