让我们请看以下示例,该示例使用3个整数组成的数组-
#include <stdio.h> const int MAX = 3; int main () { int var[] = {10, 100, 200}; int i; for (i = 0; i < MAX; i++) { printf("Value of var[%d] = %d\n", i, var[i] ); } return 0; }
输出结果
Value of var[0] = 10 Value of var[1] = 100 Value of var[2] = 200
#include <iostream> using namespace std; const int MAX = 3; int main () { int var[] = {10, 100, 200}; int i; for (i = 0; i < MAX; i++) { cout<<"Value of var"<<i<<"="<<var[i]<<"\n"; } return 0; }
输出结果
Value of var0=10 Value of var1=100 Value of var2=200
在某些情况下,我们想要维护一个数组,该数组可以存储指向int或char或任何其他可用数据类型的指针。以下是指向整数的指针数组的声明-
它将ptr声明为MAX个整数指针的数组。因此,ptr中的每个元素都持有一个指向int值的指针。以下示例使用三个整数,它们存储在指针数组中,如下所示:
#include <stdio.h> const int MAX = 3; int main () { int var[] = {10, 100, 200}; int i, *ptr[MAX]; for ( i = 0; i < MAX; i++) { ptr[i] = &var[i]; /* assign the address of integer. */ } for ( i = 0; i < MAX; i++) { printf("Value of var[%d] = %d\n", i, *ptr[i] ); } return 0; }
输出结果
Value of var[0] = 10 Value of var[1] = 100 Value of var[2] = 200
#include <iostream> using namespace std; const int MAX=3; int main () { int var[] = {10, 100, 200}; int i, *ptr[MAX]; for ( i = 0; i < MAX; i++) { ptr[i] = &var[i]; /* assign the address of integer. */ } for ( i = 0; i < MAX; i++) { cout<<"Value of var" << i<<"="<<*ptr[i] <<"\n"; } }
输出结果
Value of var0=10 Value of var1=100 Value of var2=200
您还可以使用指向字符的指针数组来存储字符串列表,如下所示:
#include <stdio.h> const int MAX = 4; int main () { char *names[] = { "Zara Ali", "Hina Ali", "Nuha Ali", "Sara Ali" }; int i = 0; for ( i = 0; i < MAX; i++) { printf("Value of names[%d] = %s\n", i, names[i] ); } return 0; }
输出结果
Value of names[0] = Zara Ali Value of names[1] = Hina Ali Value of names[2] = Nuha Ali Value of names[3] = Sara Ali
#include <iostream> using namespace std; const int MAX=4; int main () { char *names[] = { "Zara Ali", "Hina Ali", "Nuha Ali", "Sara Ali" }; int i = 0; for ( i = 0; i < MAX; i++) { cout<<"Value of names"<< i<<"="<< names[i]<<"\n"; } return 0; }
输出结果
Value of names0=Zara Ali Value of names1=Hina Ali Value of names2=Nuha Ali Value of names3=Sara Ali