C语言完美演绎4-3

news2026/3/17 9:25:08

/* 范例4-3 */#include stdio.hvoid main(){int a 123;double ff 0.01234567890;char *str 123456;/* int(%d,%i,%o,%u,%x) *//* only width */printf(int(d,i,o,u,x)........(ex: a123)\n);printf(#%2d#%3d#%4d#(%%2d,%%3d,%%4d)\n,a,a,a);/* #1 */printf(#%02d#%03d#%04d#(%%02d,%%03d,%%04d)\n,a,a,a);/* #2 */printf(#%*d#%0*d#(%%*d,%%0*d传入5,a,5,a)\n\n,5,a,5,a);/* #3 *//*标识符o,u,x,X设定方法一样 */printf(#%08o#%08u#%08X#(%%08o,%%08u,%%08X)\n, \ a,a,a);/* #4 *//* float,double(%f,%e,%g) */printf(Floating point(f,e,g).....(ex: ff0.01234567890)\n);printf(#%16f#(%%16f)\n,ff); /* #5 */printf(#%16.9f#(%%16.9f)\n,ff); /* #6 */printf(#%16.9e#(%%16.9e)\n,ff); /* #7 */printf(#%16.9g#(%%16.9g)\n,ff); /* #8 */printf(#%.9f#(%%.9f)\n,ff); /* #9 */printf(#%*.*e#(%%*.*f传入16,3,ff)\n\n,16,3,ff); /* #10 *//* char(%c) */printf(char(c)...........(ex: a,b)\n);printf(#%5c#%05.3c#\n\n,a,b); /* #11 *//* char* 字符串(%s) */printf(char * 字符串(s)...(ex: str\123456\)\n);printf(#1234567890....对齐用\n);printf(#%10s#(%%10s)\n,str); /* #12 */printf(#%10.3s#(%%10.3s)\n,str); /* #13 */printf(#%5.3s#(%%5.3s)\n,str); /* #14 */printf(#%.*s#(%%.*s输入3,str)\n,3,str); /* #15 */getchar();}程序执行结果int(d,i,o,u,x)........(ex: a123)#123#123# 123#(%2d,%3d,%4d)#123#123#0123#(%02d,%03d,%04d)# 123#00123#(%*d,%0*d传入5,a,5,a)#31177000#06618624#0064FE00#(%08o,%08u,%08X)Floating point(f,e,g).....(ex: ff0.01234567890)# 0.012346#(%16f)# 0.012345679#(%16.9f)# 1.234567890e-02#(%16.9e)# 0.0123456789#(%16.9g)#0.012345679#(%.9f)# 1.235e-02#(%*.*f传入16,3,ff)char(c)...........(ex: a,b)# a# b#char * 字符串(s)...(ex: str123456)#1234567890....对齐用# 123456#(%10s)# 123#(%10.3s)# 123#(%5.3s)#123#(%.*s传入3,str)

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