#include <stdio.h>
//課題B-1: 1からnまでの和を求めるコードを完成させてください
int sum(int n){
int k,l;
l=0;
for(k=0;k<=n;k++)
l=l+k;
return l;
}
int main(void) {
int a,b;
a = 10;
b = sum(a);
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+Ci8v6Kqy6aGMQi0xOiAx44GL44KJbuOBvuOBp+OBruWSjOOCkuaxguOCgeOCi+OCs+ODvOODieOCkuWujOaIkOOBleOBm+OBpuOBj+OBoOOBleOBhAppbnQgc3VtKGludCBuKXsKCWludCBrLGw7CglsPTA7Cglmb3Ioaz0wO2s8PW47aysrKQoJbD1sK2s7CiByZXR1cm4gbDsKCX0KCmludCBtYWluKHZvaWQpIHsKCWludCBhLGI7CiAgICBhID0gMTA7CiAgICBiID0gc3VtKGEpOwogICAgcHJpbnRmKCIx44GL44KJJWTjgb7jgafjga7lkozjga8lZCIsIGEsYiApOwoJcmV0dXJuIDA7Cn0K