例inta=1234; float f=123.456; char ch=a; printf(%8d,%2dⅦn”,a,a); printf(“%f,%8f,%8.1f,%.2f,%,2eln”,f,f,f,f,; printf(%3cmn”,ch); 运行 1234,1234 结果:123456000,123456000235,12346,123e+02 a 例 char a=“Hell, world! printf("osn%15sIn%10.5sIn%2.5sn%0.3sIn, a, a, a, a, a); 运行结果:Hell, world! Hello world! Hello Hello Hel例 int a=1234; float f=123.456; char ch=‘a’; printf(“%8d,%2d\n”,a,a); printf(“%f,%8f,%8.1f,%.2f,%.2e\n”,f,f,f,f,f); printf(“%3c\n”,ch); 运行 1234,1234 结果： 123.456000,123.456000,123.5,123.46,1.23e+02 a 例 char a[]=“Hello,world!” printf(“%s\n%15s\n%10.5s\n%2.5s\n%.3s\n”,a,a,a,a,a); 运行结果：Hello,world! Hello,world! Hello Hello Hel