# C語言題庫-055 ``` int modifyvalue() { return(x+=10); } int c hangevalue(int x ) { return(x+=1); } void m ain() { int x =10; x++; changevalue(x); x++; modifyvalue(); printf(“First output:%dn”,x); x++; changevalue(x); printf(“Second output:%dn”,x); modifyvalue(); printf(“Thirdoutput:%dn”,x); } ``` 輸出? 【標準答案】12、13、13
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