课时2作业1
#include <stdio.h>
int main(){
printf("hello wangdao");
return 0;
}
课时2作业2
#include <stdio.h>
int main(){
int a = 0,b=0,sum=0;
scanf("%d %d",&a,&b);
printf("%d",sum=a+b);
return 0;
}
课时3作业1
#include <stdio.h>
#define _CRT_SECURE_NO_WARNINGS
int main() {
int year = 0;
scanf("%d", &year);
if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) {
printf("yes");
}
else {
printf("no");
}
return 0;
}
课时2作业3
#include <stdio.h>
int main() {
int n = 0;
scanf("%d", &n);
printf("%c", n);
return 0;
}
课时3作业2
#include <stdio.h>
int main() {
int i = 0;
char j =0;
float k = 0;
scanf("%d %c %f", &i, &j, &k);
printf("%.2f", i + j + k);
return 0;
}
课时4作业1
#include <stdio.h>
int main() {
int n = 0;
scanf("%d", &n);
int a = 0, b = 0, c = n;
while (n) {
a = n % 10;
n /= 10;
b = b * 10 + a;
}
if (b == c) {
printf("yes");
}
else {
printf("no");
}
return 0;
}
课时4作业2
#include <stdio.h>
int main() {
int n = 0;
scanf("%d", &n);
int sum = 1;
while (n) {
sum *= n;
n--;
}
printf("%d", sum);
return 0;
}
课时4作业3
#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int main() {
int a, b, c, d,sum=0;
for (a = 1; a > 0 && a < 40; a++) {
for (b = 1; b > 0 && b < 40; b++) {
for (c = 1; c > 0 && c < 40; c++) {
for (d = 1; d > 0 && d < 40; d++) {
if (a + b + c + d == 40 && 10 * a + 5 * b + 2 * c + d == 100) sum++;
}
}
}
}
printf("%d", sum);
return 0;
}