//这里的a[6]表示引用a数组中序号为6的元素 【例6.1】对10个数组元素依次赋值为0,1,2,3,4,5,6,7,8,9,要求按逆序输出。 #include<stdio.h> int main() { int i,a[10]; for(i=0; i<=9;i++){ //对数组元素a[0]~a[9]赋值 a[i]=i;} for(i=9;i>=0;i--){ //输出a[9]~a[...
C program to transpose a matrix This program will read a matrix and prints the transpose matrix: #include<stdio.h>#defineMAXROW 10#defineMAXCOL 10intmain(){intmatrix[MAXROW][MAXCOL];inti,j,r,c;printf("Enter number of Rows :");scanf("%d",&r);printf("Enter number of Cols :");sca...
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int main(int argc, char *argv[]) { Py_SetProgramName(argv[0]); /* optional but recommended */ Py_Initialize(); PyRun_SimpleString("from time import time,ctime\n" "print 'Today is',ctime(time())\n"); Py_Finalize(); return 0; } 这些代码示例将在程序中初始化 Python 解释器的一个...
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3.4.2.1 matrix参数的效果对比 3.4.2.2 palette参数的效果对比 3.5 图片拷贝粘贴和保存 3.6 图片的裁剪和缩放 3.7 图片的变换 3.7.1 不同转换方法method的效果进行对比 3.8 图片的分离 3.9 图片的合并 3.10 图片的过滤 3.10.1 图片过滤器 3.10.2 图片的过滤 ...
p=&a;//p为指向字符变量a的指针 示例中,a的地址值赋给了p,于是p就指向了字符变量a。 为了得到p指向的变量的值,使用间接运算符(*),当执行指令时间间接运算符把p的值作为地址来查询内存的位置,然后就可以根据保护间接运算符的表达式对这个位置的值进行读出或写入操作。示例: ...
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printf("It is a palindrome\n"); } 5.指针在效率上可能强于下标,这是使用它们的动机之一,那么什么时候使用下标是合理的,尽管它可能在效率上有所损失? answer:It is often true that 80% of a program's run time is spent executing 20% of its code,The efficiency of statements in the other 80% ...