chimie.cpp: In function `int main()': chimie.cpp:12: `st' undeclared (first use this function) chimie.cpp:12: (Each undeclared identifier is reported only once for each function it appears in.) chimie.cpp:13: `n' undeclared (first use this function) chimie.cpp:14: `a' undeclared (first use this function) chimie.cpp:14: `calc' undeclared (first use this function) chimie.cpp:17: `dr' undeclared (first use this function) chimie.cpp:18: `j' undeclared (first use this function) chimie.cpp:19: `b' undeclared (first use this function) chimie.cpp:21: `ok' undeclared (first use this function) chimie.cpp:22: parse error before `=' token