27 lines
532 B
C++
27 lines
532 B
C++
#include <stdio.h>
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/*
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printf中%d的妙用
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%5d:宽度5，右对齐，空格补
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%05d(%.5d)：宽度5，右对齐，0补
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%-5d：宽度5，左对齐，空格补→不能写%-.5d
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printf中%c,%s的妙用
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%.2s：输出前两位
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*/
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int main(){
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double a=2,b=4;
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a/=3;
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b/=7;
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printf("double:\na = %04.2f%%, b = %55.50f%%\n",a,b);
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printf("a = %07f, b = %08f\n",a,b);
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int c=345;
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printf("int:\nc = %.6d\n",c);
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printf("c = %05d\n",c);
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printf("c = %-5d\n",c);
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double f=123456;
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printf("e:\nf = %10.2e\n",f);
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char d[]="canyoukissmyass";
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printf("string:\n%.2s\n",d);
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return 0;
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}
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