1.//hello,world

#include<stdio.h> int main() {printf("Hello World!");return 0; }

2.//輸入兩個整數，求和

#include<stdio.h> int main() {int a, b;int sum;scanf("%d,%d", &a, &b);sum = a + b;printf("%d+%d=%d", a, b, sum);return 0; }

3.//輸入兩整數，求最大值

#include<stdio.h> int main() {int a, b;scanf("%d,%d", &a, &b);printf("max:%d", a > b ? a : b);return 0; }

4.//銀行存款問題

#include<stdio.h> int main() {int years;int benjin;float nianxi;float totalMoney;scanf("%d,%d", &benjin, &years);if (years == 1)nianxi = 0.035;else if (years == 2)nianxi = 0.044;else if (years == 3)nianxi = 0.05;else if (years == 5)nianxi = 0.055;totalMoney = benjin * nianxi * years + benjin;printf("totalMoney:%.2f", totalMoney); }

5.//“閏年蟲”：輸入 year 年份和月 month，求該月的天數

#include<stdio.h> int main() {int year, month, days;int run;printf("請輸入要查詢的年份和月數：");scanf("%d,%d", &year, &month);//if (((year % 4 == 0) && (year % 100 != 0)) || year % 400 == 0)if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) //小括號有些不必要run = 1;//閏年elserun = 0;if (month == 2 && run == 1)days = 29;else if (month == 2 && run == 0)days = 28;else{switch (month){case 1:case 3:case 5:case 7:case 8:case 10:case 12:days = 31; break;default:days = 30;}}printf("%d年%d月有%d天。", year, month, days);return 0; }

6.//輸入三角型的三條邊，判斷三角形的形狀。假設輸入的三邊邊長均 > 0

#include<stdio.h> int main() {float a, b, c;printf("請輸入三角形的三條邊長：");scanf("%f,%f,%f", &a, &b, &c);if (a + b > c && a + c > b && b + c > a){if (a == b == c)printf("equilateral triangle");else if (a == b || a == c || b == c)printf("isoceles triangle");elseprintf("triangle");}elseprintf("non-triangle"); }

總結

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