编程学习网为您整理以下代码实例，主要实现：C语言数据结构在给定的索引数组后插入，希望可以帮到各位朋友。
#include <stdio.h>
#define MAX 5
voID main() {
int array[MAX] = {1, 2, 4, 5};
int N = 4; // number of elements in array
int i = 0; // loop variable
int index = 1; // index location after which value will be inserted
int value = 3; // new data element to be inserted
// print array before insertion
printf("Printing array before insertion −\n");
for(i = 0; i < N; i++) {
printf("array[%d] = %d \n", i, array[i]);
}
// Now shift rest of the elements downwards
for(i = N; i >= index + 1; i--) {
array[i + 1] = array[i];
}
// add new element at first position
array[index + 1] = value;
// increase N to reflect number of elements
N++;
// print to confirm
printf("Printing array after insertion −\n");
for(i = 0; i < N; i++) {
printf("array[%d] = %d\n", i, array[i]);
}
}
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