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.({ }),?,Ex: include main() { int x,y。 scanf(“%d,%d”, },Compile Error!,?,ex: if(a+ba,Notice: The brace( “}”)’s outer face need not semicolon。 Because in the brace({}) there is a full compound statement .,?,original program : main() { float a,b,t。 scanf(“%f,%f”, },ex1:Input twe real numbers,please output there numbers according to the order of little to big.,Need three float variables: a,b,t,?,ex2:Input three real numbers,please output there numbers according to the order of little to big.,original program : main() { float a,b,c,t。 scanf(“%f ,%f,%f”, },Return,?,include main() { int a,b。 printf(“Enter integer a:“)。 scanf(“%d“, },ex3 :Iput two numbers ,decide them to be equally or not.,Result:Enter integer a:12? Enter integer b:12? a==b,Result:Enter integer a:12? Enter integer b:9? a!=b,Return,?,General form: expression1?expression2:expression3,Condition operator commands three operate objects,it is a operator alon