C- goto keyword to get out of a nested loop

Created: 2022-08-20
Tags: #fleeting

for (i = 0; i < n; i++)
    for (j = 0; j < m; j++)
        if (a[i] == b[j])
            goto found;
            /* didn't find any common element */
            ...
found:
    /* got one: a[i] == b[j] */
    ...
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You can use code without goto that does the same thing

for (i = 0; i < n && !found; i++)
    for (j = 0; j < m && !found; j++)
        if (a[i] == b[j])
            found = 1;
if (found)
    /* got one: a[i-1] == b[j-1] */
    ...
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