---

Lỗi biên dịch:

Main.cc:6:22: error: expected ‘)’ before ‘;’ token
 float leibniz(float a; float b; int n){
                      ^
Main.cc:6:38: error: expected initializer before ‘)’ token
 float leibniz(float a; float b; int n){
                                      ^
Main.cc: In function ‘int main()’:
Main.cc:19:27: error: too many arguments to function ‘float leibniz(float)’
     float pi=leibniz(a,b,n);
                           ^
Main.cc:6:7: note: declared here
 float leibniz(float a; float b; int n){
       ^~~~~~~
Main.cc:18:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~