C语言第五课：if、else 、if else if else 控制语句

if else 、if else if else 联合使用

• 代码示列

#include <stdio.h>
int  main(){//设置中文编码输出到控制台system("chcp 65001");//今天星期六，2025年9月13日 13:49:14int today = 6;if (today ==1) {printf("今天是星期一，today = %d\n",today);}else if (today ==2) {printf("今天是星期二，today = %d\n",today);}else if (today ==3) {printf("今天是星期三，today = %d\n",today);}else if (today ==4) {printf("今天是星期四，today = %d\n",today);}else if (today ==5) {printf("今天是星期五，today = %d\n",today);}else if (today ==6) {printf("今天是星期六，today = %d\n",today);}else if (today ==7) {printf("今天是星期日，today = %d\n",today);}else {printf("今天是星期几？，today = %d\n",today);}}

• 运行效果
  

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