[C] Array array initialization summary

C array initialization summary

Found a new method to initialize the array
eg: int arrayC[MAX_LEN] = {[1…5]=9, [6…9] = 8}; The
code is as follows

#include <stdio.h>
#define MAX_LEN 10

int main (int argc, char *argv[])
{
//No initialization, random assignment of parameter values
​​//[0][0][589449744][32516][1][0][0][0][1 ][32765]
int array[MAX_LEN];
int i = 0;
for (i=0; i< MAX_LEN; ++i)
{
printf(“[%d]”,array[i]);
}
printf(“\ n");

//将数组初始化为0
//[0][0][0][0][0][0][0][0][0][0]
int arrayA[MAX_LEN] = {0};
for (i=0; i< MAX_LEN; ++i)
{
    printf("[%d]",arrayA[i]);
}
printf("\n");

//只能将数组第一个初始化为5
//[5][0][0][0][0][0][0][0][0][0]
int arrayB[MAX_LEN] = {5};
for (i=0; i< MAX_LEN; ++i)
{
    printf("[%d]",arrayB[i]);
}
printf("\n");

//分段初始化
//[0][9][9][9][9][9][8][8][8][8]
int arrayC[MAX_LEN] = {[1 … 5]=9, [6 … 9] = 8};
for (i=0; i< MAX_LEN; ++i)
{
printf(“[%d]”,arrayC[i]);
}
printf(“\n”);

//All initialized to the specified value
//[69][69][69][69][69][69][69][69][69][69]
int arrayD[MAX_LEN] = {[0 … MAX_LEN -1]=69};
for (i=0; i< MAX_LEN; ++i)
{
printf(“[%d]”,arrayD[i]);
}
printf(“\n”);

//只能在初始化时使用，否则编译时报错
//arrayD = {[0 ... 5]=8};//error: expected expression before ‘{’ token
for (i=0; i< MAX_LEN; ++i)
{
    printf("[%d]",arrayD[i]);
}
printf("\n");

}
"`
printout

[0][0][589449744][32516][1][0][0][0][1][32765]

[0][0][0][0][0][0][0][0][0][0]
[5][0][0][0][0][0][0][0][0][0]
[0][9][9][9][9][9][8][8][8][8]
[69][69][69][69][69][69][69][69][69][69]
[69][69][69][69][69][69][69][69][69][69]