23 lines
458 B
C
23 lines
458 B
C
// demonstration of realloc
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#include <stdio.h>
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#include <stdlib.h>
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int main()
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{
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int *ptr = (int *)malloc(sizeof(int)*2); // two integers
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int i;
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int *ptr_new;
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*ptr = 10;
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*(ptr + 1) = 20;
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// use realloc to have a space for three integers
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ptr_new = (int *)realloc(ptr, sizeof(int)*3); // three integers
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*(ptr_new + 2) = 30;
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for(i = 0; i < 3; i++)
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printf("%d ", *(ptr_new + i));
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printf("\n");
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return 0;
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} |