>>736
問題１
#include <iostream>
int main()
{
double a = 100., b = 200., r = 0.01;
int n = 0;
for (;a <= b;) {
a *= 1.0+r;
n++;
}
std::cout << n << "年" << std::endl;
return 0;
}

問題２
#include <iostream>
int main()
{
double a = 100., r = 0.01;
int i, n = 10;
for (i = 0; i < n; i++) {
a *= 1.0 + r;
}
std::cout << a << "円" << std::endl;
return 0;
}