iOS从零基础到精通就业－C语言入门 算数运算符
#import <Foundation/Foundation.h>
int main(int argc, const charchar * argv[]) {
//1格式化输出函数（在控制台打印）
printf("我赵日天不服！！！\n");
int age = 21;
printf("张三的年龄为%d岁\n",age);
float score = 99.7;
printf("李四的考试成绩为%.1f分\n",score);
//算数运算符
int a = 10;
int b = 20;
int c = a+b;
printf("c=%d\n",c);
int a1 = 25;
int b1 = 10;
int c1 = a1*b1;
printf("c1 = %d\n",c1);
//除法
//两个整数相除 结果只保留整数
float a2 = 5.0;
int b2 = 2;
float c2 = a2/b2;
printf("%.1f\n",c2);
//求余
int a3 = 5;
int b3 = 2;
int c3 = a3%b3;
printf("c3 = %d\n",c3);
//自增(+1) 自减(-1)
int a4 = 100;
a4++;
printf("a4 = %d\n",a4);
//++在前 ++在后结果不一样！！！！！
int a5 = 100;
int b5 = 200 + ++a5;//300 301
printf("b5 = %d\n",b5);
//复合运算符
int a6 = 100;
int b6 = 50;
a6+=b6;//a6 = a6+b6;
printf("a6 = %d\n",a6);
return 0;
}
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