問1. [5x4=20]

x = 7
x = 1
y = 0.0
y = 1.0

問2. [5x4=20]

1) a)
ans2 = 300

1) b)
ans3 = 600
ans4 = 600

2) a)
ans1 = 300
ans2 = 300

2) b)
ans3 = 300
ans4 = 300


問3. [5x4=20]

m = 0.5
b = 8
a = 3
b = 1


問4. [10]

if(a[i] == ' ' || a[i] == ','){
    a[i] = '_';
}
else if(a[i] == '.'){
    a[i] = '#';
}
else{
    a[i] -= 32;
}

あるいは

if(a[i] == ' '){
    a[i] = '_';
}
else if(a[i] == ','){
    a[i] = '_';
}
else if(a[i] == '.'){
    a[i] = '#';
}
else{
    a[i] -= 32;
}


問5. [10]

n = 7

問6. [5x2=10]

a)
s[2][4] = {{1, 2, 3, 4}, {2, 4, 6, 8}};
あるいは
s[2][4] = {1, 2, 3, 4, 2, 4, 6, 8};

b)
1 2
2 4
3 6
4 8

問7. [5x2=10]

a)
j=9
j=27
j=81
k=4

b)
j=9
j=27
j=81
j=243
j=243
k=5