补充:实际位长测试 【例 DataTest,c】基本数据类型的位长测试 sized运算符获取一个类 型所占内存的字节数大小 include <stdio h> void mainO printf("char %d byteIn", sizeof(char)) intf("short %d bytesIn", sizeof(short)) printf("int %d bytesin", sizeof(int)) printf("long %d bytesIn", sizeof(long)) printf("float %d bytesIn", sizeof(float) rinf( double %d bytesIn", sizeof(double)) intf("long double %d bytesin", sizeof(long double))【例DataTest.C】 基本数据类型的位长测试 #include <stdio.h> void main() { printf( "char ------- %d byte\n", sizeof(char) ); printf( "short ------- %d bytes\n", sizeof(short) ); printf( "int ------- %d bytes\n", sizeof(int) ); printf( "long ------- %d bytes\n", sizeof(long) ); printf( "float ------- %d bytes\n", sizeof(float) ); printf( "double ------- %d bytes\n", sizeof(double) ); printf( "long double ------- %d bytes\n", sizeof(long double) ); } 补充： 实际位长测试 sizeof运算符:获取一个类 型所占内存的字节数大小