c语言中浮点数的声明与输出。
[root@centos79 test]# cat test2.c #include <stdio.h> int main(void) { float f = 1000.0; double d = 1000.0; long double ld = 1000.0; printf("float: %f.\n", f); printf("float: %e.\n\n", f); printf("double: %f.\n", d); printf("double: %e.\n\n", d); printf("long double: %Lf.\n", ld); printf("long double: %lf.\n", ld); printf("long double: %le.\n", ld); return 0; } [root@centos79 test]# gcc test2.c && ./a.out float: 1000.000000. float: 1.000000e+03. double: 1000.000000. double: 1.000000e+03. long double: 1000.000000. long double: 1000.000000. long double: 1.000000e+03.