C语言

1. 基础

1. 变量

#include <stdio.h>

int main() {
    int a = 1;
    char b = 'b';
    float c = 3.1;
    double d = 3.1111111111;
    printf("a:%d\n",a);
    printf("b:%c\n",b);
    printf("c:%.2f\n",c);
    printf("d:%.6f\n",d);
    return 0;
}
#include <stdio.h>

int ma