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#include <stdio.h>
 
void funcPtr(int a);
 
int main(){
 
 int k=1;
 
 void (*funcPtr2)(int);
 
 funcPtr2 = (void*)(funcPtr);
 
 // funcPtr2 = (void(*)(int))(funcPtr);
 
 (*funcPtr2)(k);
 
 return 0;
 
}
 
void funcPtr(int a){
 
 printf("%d", a);
 
}

prog.c: In function ‘main’:
prog.c:11:13: error: ISO C forbids conversion of function pointer to object pointer type [-Werror=pedantic]
  funcPtr2 = (void*)(funcPtr);
             ^
prog.c:11:11: error: ISO C forbids assignment between function pointer and ‘void *’ [-Werror=pedantic]
  funcPtr2 = (void*)(funcPtr);
           ^
cc1: all warnings being treated as errors

Standard output is empty