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C Brain Teasers: Exercise Your Mind

Loop Up and Down

Explore the behavior of loops in C programming by analyzing puzzle code. Learn to predict output and deepen your understanding of loop mechanics in practical contexts.

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Puzzle code

...
C++
#include <stdio.h>
int main()
{
    int u,d;
    for( u=0, d=0; u<11; u++, d-- )
    printf("%2d %2d\n", u, d);
    return(0);
}
...