CANT FIND MY MISTAKE IN MY CODE

#1

HERE IS THE CODE I AM WORKING ON:

int main() {

int a;
cin>>a;

int b;
cin>>b;

int c;
cin>>c;

int D=(b*b)-4(a*c);

int r1=(-b+pow(D,0.5))/2a;
int r2=(-b-pow(D,0.5))/2a;

if(D>0){
	cout<<"real and distinct\n";
	cout<<r1<<" "<<r2;

}

else if (D=0){
	cout<<"real and equal";
	r1=-b/2a;
	cout<<r1<<" "<<r1;
}

else cout<<"imaginary";

return 0;

}

AND HERE IS THE ERROR:

source.cpp: In function ‘int main()’:
source.cpp:16:19: error: expression cannot be used as a function
16 | int D=(bb)-4(ac);
| ^

source.cpp:18:25: error: unable to find numeric literal operator ‘operator""a’
18 | int r1=(-b+pow(D,0.5))/2a;
| ^~

source.cpp:19:25: error: unable to find numeric literal operator ‘operator""a’
19 | int r2=(-b-pow(D,0.5))/2a;
| ^~

source.cpp:29:9: error: unable to find numeric literal operator ‘operator""a’
29 | r1=-b/2a;

PLS HELP ME FIND MY MISTAKE.THANK YOU.

#2

hi @anshul3558_e8c9aa486c392ca3 updated https://ide.codingblocks.com/s/667142

#3

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