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浮點(diǎn)數(shù)格式控制符

int main(void)

{

//浮點(diǎn)數(shù)16進(jìn)制p-記數(shù)法

printf("浮點(diǎn)數(shù)p-記數(shù)法:%a\n", 100.0);

printf("浮點(diǎn)數(shù)p-記數(shù)法:%A\n", 123.0);

//浮點(diǎn)數(shù)e-記數(shù)法

printf("浮點(diǎn)數(shù)e-記數(shù)法:%e\n", 100.0);

printf("浮點(diǎn)數(shù)e-記數(shù)法:%E\n", 123.0);

//浮點(diǎn)數(shù)十進(jìn)制記數(shù)法

printf("浮點(diǎn)數(shù)十進(jìn)制記數(shù)法:%f\n", 123.0);

printf("浮點(diǎn)數(shù)十進(jìn)制記數(shù)法:%F\n", 123.0);

//根據(jù)數(shù)值不同自動(dòng)選擇%f或%e

printf("浮點(diǎn)數(shù)自動(dòng)記數(shù)法:%g\n", 123.0);

printf("浮點(diǎn)數(shù)自動(dòng)記數(shù)法:%G\n", 123.0);

//long double型浮點(diǎn)數(shù)

printf("long double型浮點(diǎn)數(shù):%Lf\n", 123.0);

printf("long double型浮點(diǎn)數(shù):%LF\n", 123.0);

//浮點(diǎn)數(shù)小數(shù)點(diǎn)精度控制

printf("2位精度:%.2f\n", 3.14156);//3.14

printf("4位精度:%.4f\n", 3.14156);//3.1416

system("pause");

return 0;

}

整數(shù)格式控制符

int main(void)

{

int value = 0x12345678;

//無(wú)符號(hào)八進(jìn)制整數(shù)

printf("無(wú)符號(hào)八進(jìn)制整數(shù):%o\n", 123);

//char類型整數(shù)

printf("char類型整數(shù):%hhu\n", value);

printf("char類型整數(shù):%hhd\n", value);

printf("char類型整數(shù):%hhx\n", value);

//short類型整數(shù)

printf("short類型整數(shù):%hu\n", value);

printf("short類型整數(shù):%hd\n", value);

printf("short類型整數(shù):%hx\n", value);

//int類型整數(shù)

printf("int類型整數(shù):%u\n", value);

printf("int類型整數(shù):%d\n", value);

printf("int類型整數(shù):%x\n", value);

//long類型整數(shù)

printf("long類型整數(shù):%lu\n", value);

printf("long類型整數(shù):%ld\n", value);

printf("long類型整數(shù):%lx\n", value);

//long long類型整數(shù)

printf("long long類型整數(shù):%llu\n", value);

printf("long long類型整數(shù):%lld\n", value);

printf("long long類型整數(shù):%llx\n", value);

//intmax_t類型整數(shù)

printf("intmax_t類型整數(shù):%ju\n", value);

printf("intmax_t類型整數(shù):%jd\n", value);

printf("intmax_t類型整數(shù):%jx\n", value);

    //ptrdiff_t類型整數(shù)

    printf("intmax_t類型整數(shù):%tu\n", value);

    printf("intmax_t類型整數(shù):%td\n", value);

    printf("intmax_t類型整數(shù):%tx\n", value);

//size_t類型整數(shù)

printf("size_t類型整數(shù):%zd\n", value);

printf("size_t類型整數(shù):%zu\n", value);

printf("size_t類型整數(shù):0x%zx\n", value);

//windows平臺(tái)下專用說(shuō)明符%I64，表示64位整數(shù)

printf("windows平臺(tái)64位整數(shù):%I64d\n", value);

printf("windows平臺(tái)64位整數(shù):%I64u\n", value);

printf("windows平臺(tái)64位整數(shù):0x%I64x\n", value);

system("pause");

return 0;

}

正數(shù)相關(guān)格式控制符

int main(void)

{

//使用+號(hào)且值為正的有符號(hào)數(shù)時(shí)，在值前面顯示+號(hào)

printf("%+d\n", 10);//+10

printf("%+d\n", -12);//-12

printf("%+f\n", 10.0);

printf("%+f\n", -12.0);

//使用空格且值為正的有符號(hào)數(shù)時(shí)，在值前面顯示空格

printf("% d\n", 10);// 10

printf("% d\n", -12);//-12

printf("% f\n", 10.0);

printf("% f\n", -12.0);

    system("pause");

return 0;

}

字段寬度最小值

int main(void)

{

//最小長(zhǎng)度為3，不足3則在左邊補(bǔ)充空格

printf("%3d\n", 12);

//最小長(zhǎng)度為10，不足10則在左邊補(bǔ)充空格

printf("%10f\n", 0.1);

//最小長(zhǎng)度為3，不足3則在左邊補(bǔ)充0

printf("%03d\n", 12);

//最小長(zhǎng)度為10，不足10則在左邊補(bǔ)充0

printf("%010f\n", 0.1);

    system("pause");

return 0;

}

int main(void)

{

printf("start=>%-8d<=end\n", 123);//start=>123     <=end

    system("pause");

return 0;

}

其它格式控制符

int main(void)

{

//指針

int value = 100;

printf("指針:%p\n", &value);

//字符

printf("字符:%c\n", 0x33);

//字符串

printf("字符串:%s\n", "hello");

//百分號(hào)

printf("百分號(hào):%%\n");

//八進(jìn)制整數(shù)前加上0

printf("%#o\n", 123);

//十六進(jìn)制整數(shù)前加上0x或0X

printf("%#x\n", 123);

//浮點(diǎn)數(shù)一定使用小數(shù)點(diǎn)

printf("%.0f\n", 1.0);

printf("%#.0f\n", 1.0);

    system("pause");

return 0;

}

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版權(quán)聲明：本文為CSDN博主「土豆吞噬者」的原創(chuàng)文章，遵循CC 4.0 BY-SA版權(quán)協(xié)議，轉(zhuǎn)載請(qǐng)附上原文出處鏈接及本聲明。

原文鏈接：https://blog.csdn.net/xiongya8888/java/article/details/89609748