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C语言的基本数据类型及其打印输出
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C语言的基本数据类型及其打印输出
原创根据数据的类型，C语言大致将其分为三大类，分别为整数类型，小数类型，以及字符类型。整数类型用来打印整数，如123，625，1...这样的数。小数类型则用来打印小数，如1.25，263.12...这样的数。而字符类型则用来打印字母，如A,B,C,a,b,c...这样的数。下面将依次介绍这三大类的具体表示，及如何打印输出。
1.整数类型介绍及其打印输出。
1）整数类型介绍
其中最常用到的整数类型为 int 。
short | ||
4或8字节 | ||
long long |
2）整数类型的打印输出
short --- %hd ; int --- %d ; long --- %ld ; long long --- %lld ;
#include<stdio.h>
int main(void) {
short a = 0;
int b = 0;
long c = 0;
long long d = 0;
printf("a = %hd\n", a);
printf("b = %d\n", b);
printf("c = %ld\n", c);
printf("d = %lld\n", d);
return 0;
}
int main(void) {
short a = 0;
int b = 0;
long c = 0;
long long d = 0;
printf("a = %hd\n", a);
printf("b = %d\n", b);
printf("c = %ld\n", c);
printf("d = %lld\n", d);
return 0;
}
3）打印结果显示
2.小数类型介绍及其打印输出
1）小数类型介绍
float | 单精度浮点型 | |
double | 双精度浮点型 |
2）小数类型打印输出
float --- %f ; double --- %lf ;
由于C语言系统默认小数为double类型，而float类型的表示范围比double类型要小。所以一般会在float类型的数后面加上‘f’防止编译器报警告。
#include<stdio.h>
int main(void) {
float a = 1.23f;
double b = 2.36;
printf("a = %f\n", a);
printf(" = %lf\n", b);
return 0;
}
int main(void) {
float a = 1.23f;
double b = 2.36;
printf("a = %f\n", a);
printf(" = %lf\n", b);
return 0;
}
3）打印结果显示
3.字符型介绍及其打印输出
1）字符型介绍
2）字符型打印输出
char --- %c ;
#include<stdio.h>
int main(void) {
char ch = 'a';
printf("ch = %c\n", ch);
return 0;
}
int main(void) {
char ch = 'a';
printf("ch = %c\n", ch);
return 0;
}
3）打印结果显示
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