题目内容

Multiple cases in a switch statement can share a group of execution statements.

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Perform the following procedure, input 3 and the output is ( ). #include “stdio.h” main() { int k; scanf(”%d”, &k); switch(k) { case 1: printf(”%d\n”, k++); case 2: printf(”%d\n”, k++); case 3: printf(”%d\n”, k++); case 4: printf(”%d\n”, k++); break; default: printf(”Full!\n”); }}

A. 3
B. 4
C. 34
D. 44

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while and do while statements have the same function.

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Three expressions in the for loop statement, omitting the second expression indicates that the loop condition is true.

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When executing the following segments ( ) x=-1； do {x=x*x；} while (!x)；

A. Loop body will execute once
B. The loop body will execute twice
C. The loop body will execute many times
D. You will be prompted for a syntax error

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