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double pointer malloc in c

Clever kitty answered on August 15, 2020 Popularity 9/10 Helpfulness 3/10

answer double pointer malloc in c

double pointer malloc in c

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char *x;  // Memory locations pointed to by x contain 'char'
char **y; // Memory locations pointed to by y contain 'char*'

x = (char*)malloc(sizeof(char) * 100);   // 100 'char'
y = (char**)malloc(sizeof(char*) * 100); // 100 'char*'

// below is incorrect:
y = (char**)malloc(sizeof(char) * 50 * 50);
// 2500 'char' not 50 'char*' pointing to 50 'char'

Popularity 9/10 Helpfulness 3/10 Language whatever

Source: stackoverflow.com

Tags: c double-pointer malloc whatever

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