int a;
a = 1 + 2;
printf("%d", a);int a;
a = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10;
printf("こたえは %d", a);int a, b, c;
a = inptInt("たて? ");
b = inptInt("よこ? ");
c = a * b;
printf("めんせき = %d", c);float a, b, c, d;
a = inptFlot("しんちょう[cm]? ");
b = inptFlot("たいじゅう[kg]? ");
c = a / 100.0;
d = b / (c * c);
printf("BMI = %f", d);int inptInt(const char *s, ...)
{
int r;
if (s != NULL) { sを表示(printf風に); }
scanf("%d", &r);
return r;
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