Dev-c++ Support C99 Standard setup method

Dev-c++ report error such as
[Error] ' for ' loop initial declarations is only allowed in C99 mode
[Note] Use option-std=c99 or-std=gnu99 to compile your code

1.

2.

step1 Tools, compile options, Compiler tab, in the "compile with the following command" check box, enter the command-std=c99 (unlike GCC, where the letter C in C99 is lowercase) step2 Tools, compile options, code generation/Optimization tab, support all ANSI C standards on the C compiler

-std=c99

Resources

1788699

Dev-c++ Support C99 Standard setup method