change: printf to fprintf(stderr,..) for c tests

[aashu10sh]

Summary

Converted all the instances of printf to fprintf(stderr,..) in the C test suite.
Fixes #15097

All the tests were ran after changes to the code was made and tests passed successfully.

Details and comments

I am sorry if this does not meet the standards of the repository. This is my first "real" open source contribution:) Please let me know if there is anything to improve/change.

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[coveralls]

Pull Request Test Coverage Report for Build 18246653754

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 5 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.02%) to 88.24%

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Files with Coverage Reduction	New Missed Lines	%
crates/circuit/src/parameter/parameter_expression.rs	1	81.99%
crates/circuit/src/parameter/symbol_expr.rs	1	72.86%
crates/qasm2/src/expr.rs	1	93.82%
crates/qasm2/src/lex.rs	2	92.54%

Totals
Change from base Build 18229727033:	0.02%
Covered Lines:	93133
Relevant Lines:	105545

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💛 - Coveralls