Causes the enclosing for, while or do-while loop or switch statement to terminate.
Used when it is otherwise awkward to terminate the loop using the condition expression and conditional statements.
[edit] Syntax attr-spec-seq (optional)break ; attr-spec-seq - (C23) optional list of attributes, applied to the break statement
Appears only within the statement of a loop body (while, do-while, for) or within the statement of a switch.
After this statement the control is transferred to the statement or declaration immediately following the enclosing loop or switch, as if by goto.
A break statement cannot be used to break out of multiple nested loops. The goto statement may be used for this purpose.
#include <stdio.h>
int main(void)
{
int i = 2;
switch (i)
{
case 1: printf("1");
case 2: printf("2"); // i==2, so execution starts at this case label
case 3: printf("3");
case 4:
case 5: printf("45");
break; // execution of subsequent cases is terminated
case 6: printf("6");
}
printf("\n");
// Compare outputs from these two nested for loops.
for (int j = 0; j < 2; j++)
for (int k = 0; k < 5; k++)
printf("%d%d ", j,k);
printf("\n");
for (int j = 0; j < 2; j++)
{
for (int k = 0; k < 5; k++) // only this loop is exited by break
{
if (k == 2)
break;
printf("%d%d ", j,k);
}
}
}
Possible output:
2345 00 01 02 03 04 10 11 12 13 14 00 01 10 11[edit] References
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