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C Language > Learn C Language > How can you tell if a loop ended prematurely?
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How can you tell if a loop ended prematurely?

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Professional Tutor with 15 years of experience.

If we check the loop variable we can check whether the loop is terminated or completed.
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Computer Wizard

Generally, loops are dependent on one or more variables. Your program can check those variables outside the loop to ensure that the loop executed properly. For instance, consider the following example: #define REQUESTED_BLOCKS 512 int x; char* cp; /* Attempt (in vain, I must add...) to allocate...
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Generally, loops are dependent on one or more variables. Your program can check those variables outside the loop to ensure that the loop executed properly. For instance, consider the following example: #define REQUESTED_BLOCKS 512 int x; char* cp[REQUESTED_BLOCKS]; /* Attempt (in vain, I must add...) to allocate 512 10KB blocks in memory. */ for (x=0; x< REQUESTED_BLOCKS; x++) { cp[x] = (char*) malloc(10000, 1); if (cp[x] == (char*) NULL) break; } /* If x is less than REQUESTED_BLOCKS, the loop has ended prematurely. */ if (x < REQUESTED_BLOCKS) printf(“Bummer! My loop ended prematurely!\n”); Notice that for the loop to execute successfully, it would have had to iterate through 512 times. Immediately following the loop, this condition is tested to see whether the loop ended prematurely. If the variable x is anything less than 512, some error has occurred. read less
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Computer & Maths Professor

Generally, loops are dependent on one or more variables. Your program can check those variables outside the loop to ensure that the loop executed properly. For example, if a loop is executed with the help of i variable 10 times, the value of i if less than 10 (outside the loop) indicates premature end...
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Generally, loops are dependent on one or more variables. Your program can check those variables outside the loop to ensure that the loop executed properly. For example, if a loop is executed with the help of i variable 10 times, the value of i if less than 10 (outside the loop) indicates premature end of loop read less
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Tutor

Generally, loops are dependent on one or more variables. Your program can check those variables outside the loop to ensure that the loop executed properly. when the last condition is executed and when the test expression fails the loop will end and the program control goes out from the loop.
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