Source Code: #include <stdio.h> int main () { char c; double a,b; printf( "Operation signs: \n\t For Addition \t\t : \t Press '+' \n\t For subtraction \t : \t Press '-' \n\t For multiplication \t : \t Press '*' \n\t For division \t\t : \t Press '/' \n\n Select an operation: \n " ); scanf( "%c" , & c); printf( "Enter a number: \n " ); scanf( "%lf" , & a); printf( "Enter another number: \n " ); scanf( "%lf" , & b); switch (c) { case '+' : printf( "%.1lf + %.1lf = %.1lf" ,a, b, a + b); break ; case '-' : printf( "%.1lf - %.1lf = %.1lf" ,a, b, a - b); break ; case '*' : printf( "%.1lf * %.1lf = %.1lf" ,a, b, a * b); break ; case '/' : printf( ...
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