Answer 1

for loop using c++:
int I,j;
for(I=0;I<4;I++){
for(j=0;j<=I;j++){
cout<<"*";}
cout<<"\n";}
while loop using c:
int I=0;
while(I<4){
int j=0;
while(j<=I){
print("*");
j++;}
print("\n");
I++;}