jni - Android native "undeclared (first use in this function)" -


i quite new android-ndk. code 

const char *incstr = (*env)->getstringutfchars(env, str, null); if (incst && incst[0] != '\0') {     char *outcstr = b64encode(incstr);     return (*env)->newstringutf(env, outcstr); }

i error

'incst' undeclared (first use in function) if (incst && incst[0] != '\0') {

what did wrong?

const char *incstr = (*env)->getstringutfchars(env, str, null); if (incst && incst[0] != '\0') {

you declared incstr tried use incst without r


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