Program Body

#include< iostream >
#include< conio.h >
using namespace std;
int main(){
int ex,re,num,n;
const int z=0;
cin>>num;
cin>>ex;
if(num>0&&ex>0){

re=numnum;
for(n=2;n<ex;n++){
re=renum;

}
cout<<re;
}else if(num<0&&ex>0){

re=numnum;
for(n=2;n<ex;n++){
re=renum;

}
cout<<re;
}
else if(num>0&&ex<0){
cout<<"0.";
ex=-ex;
if(num>9&&num<100){

        for(n=2;n<ex;n++){
    cout<<z;
}
cout<<num;
}else if(num>0&&num<10){
        for(n=1;n<ex;n++){
    cout<<z;
}
cout<<num;
}else if(num>99&&num<1000){
        for(n=3;n<ex;n++){
    cout<<z;
}
cout<<num;
}

}else if(num<0&&ex<0){
cout<<"- 0.";
ex=-ex;
for(n=1;n<ex;n++){
cout<<z;
}
cout<<-(num);
}
else if(ex==0){
cout<<1;
}
else {
cout<<"Invalid exponent expression"<<endl;
}
getch();
return 0;
}

Written In C++

Source

Made in Visual Studio

source

Thanks and I hope you liked it!